# \#bugs **URL:** https://forums.unrealengine.com/tag/bugs/2091.md [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) --- ## [LIMITED ISLANDS ON 1.0 CREATIVE (Can’t Delete UEFN ISLANDS)](https://forums.unrealengine.com/t/limited-islands-on-1-0-creative-can-t-delete-uefn-islands/2728902)
**Author:** [@Dehalfwit](https://forums.unrealengine.com/u/Dehalfwit)\ **Replies:** 9\ **Last updated:** [October 31, 2026, 3:13pm UTC](https://forums.unrealengine.com/t/limited-islands-on-1-0-creative-can-t-delete-uefn-islands/2728902 "2026-10-31T15:13:10Z")
Summary Hello! After the recent update, it seems that all my UEFN projects (unpublished and published) have crossed into my FN Creative 1.0 portal. This now limits my ability to make new island in 1.0 and I cannot delete… --- ## [CREATIVE 1.0 (PROGRESS LOST WHEN GAME INITIATES “SAVING”)](https://forums.unrealengine.com/t/creative-1-0-progress-lost-when-game-initiates-saving/2728904)
**Author:** [@Dehalfwit](https://forums.unrealengine.com/u/Dehalfwit)\ **Replies:** 1\ **Last updated:** [June 22, 2026, 5:00pm UTC](https://forums.unrealengine.com/t/creative-1-0-progress-lost-when-game-initiates-saving/2728904 "2026-06-22T17:00:28Z")
Summary I started noticing this issue in late April. Basically, when I launch creative alone or with friends, somewhere in the timeframe between 20 minutes to a hour and a half will initiate an auto-save for the islands… --- ## [Quack's feedback, bugs and issues experienced by the Epic games launcher.](https://forums.unrealengine.com/t/quacks-feedback-bugs-and-issues-experienced-by-the-epic-games-launcher/2709370)
**Author:** [@1-DUCK-1](https://forums.unrealengine.com/u/1-DUCK-1)\ **Replies:** 2\ **Last updated:** [June 8, 2026, 4:12am UTC](https://forums.unrealengine.com/t/quacks-feedback-bugs-and-issues-experienced-by-the-epic-games-launcher/2709370 "2026-06-08T04:12:43Z")
Using windows 10 UI + button issues, some gets “fixed” by putting the window in fullscreen and then able to go back down again to window mode. To sometimes the launcher options at the taskbar can be broken buttons too, … --- ## [Child Actors removed during Play in Editor session but still there in the editor](https://forums.unrealengine.com/t/child-actors-removed-during-play-in-editor-session-but-still-there-in-the-editor/2721239)
**Author:** [@AMadLad](https://forums.unrealengine.com/u/AMadLad)\ **Replies:** 1\ **Last updated:** [May 11, 2026, 5:46am UTC](https://forums.unrealengine.com/t/child-actors-removed-during-play-in-editor-session-but-still-there-in-the-editor/2721239 "2026-05-11T05:46:39Z")
I have some child actors in a blueprint and when I click on play in editor, they disappear. but when I end the session, the child actors are right there where they were. I don’t know what’s causing it at all, pleas… --- ## [Epic Developer not loading](https://forums.unrealengine.com/t/epic-developer-not-loading/2715696)
**Author:** [@\_w131](https://forums.unrealengine.com/u/_w131)\ **Replies:** 1\ **Last updated:** [May 3, 2026, 2:03pm UTC](https://forums.unrealengine.com/t/epic-developer-not-loading/2715696 "2026-05-03T14:03:28Z")
Summary I don’t know if i’m the only person experiencing this issue, but it’s been like 2 weeks maybe, and whenever i try to use the Developer Assistant, it gets stuck loading for minutes to even hours. only thing that s… --- ## [Cook failure EXCEPTION\_ACCESS\_VIOLATION with no asset name in the log ](https://forums.unrealengine.com/t/cook-failure-exception-access-violation-with-no-asset-name-in-the-log/2716033)
**Author:** [@whiteroseofthesea](https://forums.unrealengine.com/u/whiteroseofthesea)\ **Replies:** 0\ **Last updated:** [April 17, 2026, 1:59am UTC](https://forums.unrealengine.com/t/cook-failure-exception-access-violation-with-no-asset-name-in-the-log/2716033 "2026-04-17T01:59:06Z")
I was packaging my UE 5.5 project and kept getting this at the end of the cook: Unhandled Exception: EXCEPTION\_ACCESS\_VIOLATION writing address 0x0000000000000030 \[Callstack\] UnrealEditor-UMG.dll!UnknownFunction \[Callst… --- ## [Advanced copy FAILS! How to fix?](https://forums.unrealengine.com/t/advanced-copy-fails-how-to-fix/484898)
**Author:** [@anonymous\_user\_0d16bee7](https://forums.unrealengine.com/u/anonymous_user_0d16bee7)\ **Replies:** 3\ **Last updated:** [January 28, 2026, 6:21pm UTC](https://forums.unrealengine.com/t/advanced-copy-fails-how-to-fix/484898 "2026-01-28T18:21:47Z")
Every time I try copying some particles from a folder under the main “Content” folder into another location in my project, despite using the “advanced copy” method to copy all dependencies and fix redirects to the new lo… --- ## [A BUG IN OBJECTIVE DEVICE (VERSE)](https://forums.unrealengine.com/t/a-bug-in-objective-device-verse/2174722)
**Author:** [@HarlleCreate](https://forums.unrealengine.com/u/HarlleCreate)\ **Replies:** 3\ **Last updated:** [December 29, 2025, 3:50am UTC](https://forums.unrealengine.com/t/a-bug-in-objective-device-verse/2174722 "2025-12-29T03:50:00Z")
Summary When I use the damage event on the objective device it simply doesn’t work, it appears that it’s wrong because it isn’t, but it just doesn’t work Please select what you are reporting on: Verse What Type of Bug … --- ## [Login Page Keeps Reappearing After Sign-In](https://forums.unrealengine.com/t/login-page-keeps-reappearing-after-sign-in/2673249)
**Author:** [@Wxillss](https://forums.unrealengine.com/u/Wxillss)\ **Replies:** 2\ **Last updated:** [December 8, 2025, 9:42am UTC](https://forums.unrealengine.com/t/login-page-keeps-reappearing-after-sign-in/2673249 "2025-12-08T09:42:45Z")
Summary Hi, I downloaded the app and logged in successfully, but after a few seconds the login screen shows up again. This keeps happening repeatedly, even when I try to start a scan using either of the camera options. I… --- ## [Rocket Racing crashing method ](https://forums.unrealengine.com/t/rocket-racing-crashing-method/2673875)
**Author:** [@benjipala4](https://forums.unrealengine.com/u/benjipala4)\ **Replies:** 0\ **Last updated:** [November 11, 2025, 3:20pm UTC](https://forums.unrealengine.com/t/rocket-racing-crashing-method/2673875 "2025-11-11T15:20:45Z")
Summary Rocket Racing map crash on PS4 and Switch after V38 update when joining group sessions Please select what you are reporting on: Unreal Editor for Fortnite What Type of Bug are you experiencing? Matchmaking Ste… --- ## [Localization Gather Text doesn't work in Unreal Engine 5.6](https://forums.unrealengine.com/t/localization-gather-text-doesnt-work-in-unreal-engine-5-6/2601633)
**Author:** [@ORTyOW](https://forums.unrealengine.com/u/ORTyOW)\ **Replies:** 15\ **Last updated:** [November 9, 2025, 8:13pm UTC](https://forums.unrealengine.com/t/localization-gather-text-doesnt-work-in-unreal-engine-5-6/2601633 "2025-11-09T20:13:34Z")
Summary Localization Tools do not work properly in 5.6 - “Gather Text” is broken Please select what you are reporting on: Creative What Type of Bug are you experiencing? UI/Tools Steps to Reproduce Open your project … --- ## [Bug Causing Saved Inventory Items Missing](https://forums.unrealengine.com/t/bug-causing-saved-inventory-items-missing/2648310)
**Author:** [@Mycal\_Gaming](https://forums.unrealengine.com/u/Mycal_Gaming)\ **Replies:** 2\ **Last updated:** [October 1, 2025, 6:12am UTC](https://forums.unrealengine.com/t/bug-causing-saved-inventory-items-missing/2648310 "2025-10-01T06:12:40Z")
Summary There’s a bug on my map causing player saved inventory items missing, players to collide with each other and quests not showing on the screen! Please select what you are reporting on: Creative What Type of Bug … --- ## [Preset creation being lost during cook - Unreal Game Sync - warning ...not registered ](https://forums.unrealengine.com/t/preset-creation-being-lost-during-cook-unreal-game-sync-warning-not-registered/2650091)
**Author:** [@TJW\_Audio](https://forums.unrealengine.com/u/TJW_Audio)\ **Replies:** 2\ **Last updated:** [September 4, 2025, 8:25pm UTC](https://forums.unrealengine.com/t/preset-creation-being-lost-during-cook-unreal-game-sync-warning-not-registered/2650091 "2025-09-04T20:25:11Z")
Hello peoples, For some reason every time I create a preset and save it for a cook with UGS (Unreal Game Sync) I am encountering my newly created preset producing the below warning and it is leading to my child preset n… --- ## [Project Files Disappeared - anyone else?](https://forums.unrealengine.com/t/project-files-disappeared-anyone-else/323001)
**Author:** [@ThomasN](https://forums.unrealengine.com/u/ThomasN)\ **Replies:** 15\ **Last updated:** [March 29, 2025, 5:45pm UTC](https://forums.unrealengine.com/t/project-files-disappeared-anyone-else/323001 "2025-03-29T17:45:52Z")
I was cleaning up and deleted a My Project folder and some how My Project2 some how dissapperared any one else see this? It had a bunch of migrated content. Ill try to reproduce. I always felt funny about files not goi… --- ## [Unreal Game Sync UI Broken](https://forums.unrealengine.com/t/unreal-game-sync-ui-broken/2278962)
**Author:** [@lenagrrarrow](https://forums.unrealengine.com/u/lenagrrarrow)\ **Replies:** 2\ **Last updated:** [February 5, 2025, 10:35pm UTC](https://forums.unrealengine.com/t/unreal-game-sync-ui-broken/2278962 "2025-02-05T22:35:43Z")
Hi there! As of a few weeks ago, buttons and inputs have completely disappeared for me from the UI of Unreal Game Sync. The app is still totally functional if I navigate inputs via keyboard, so I know they’re still there.… --- ## [Volumetric Clouds - Ghosting and Occlusion Issues](https://forums.unrealengine.com/t/volumetric-clouds-ghosting-and-occlusion-issues/2227435)
**Author:** [@Cyclicalbash](https://forums.unrealengine.com/u/Cyclicalbash)\ **Replies:** 0\ **Last updated:** [December 17, 2024, 5:36am UTC](https://forums.unrealengine.com/t/volumetric-clouds-ghosting-and-occlusion-issues/2227435 "2024-12-17T05:36:31Z")
I’ve recently started playing Stalker 2 and have been working on compiling an Engine.ini file to assist the modding community. However, I’ve encountered two significant issues: Volumetric Clouds: There are noticeable g… --- ## [Lighting issue](https://forums.unrealengine.com/t/lighting-issue/2095877)
**Author:** [@meltmyeyes](https://forums.unrealengine.com/u/meltmyeyes)\ **Replies:** 3\ **Last updated:** [November 2, 2024, 6:24am UTC](https://forums.unrealengine.com/t/lighting-issue/2095877 "2024-11-02T06:24:40Z")
Summary When it is turning night or day in a creative match on Xbox, the car lights become blinding. Please select what you are reporting on: Creative What Type of Bug are you experiencing? Other Steps to Reproduce Ge… --- ## [Is Substrate Production Ready?](https://forums.unrealengine.com/t/is-substrate-production-ready/2007928)
**Author:** [@Wayk](https://forums.unrealengine.com/u/Wayk)\ **Replies:** 2\ **Last updated:** [September 11, 2024, 9:42am UTC](https://forums.unrealengine.com/t/is-substrate-production-ready/2007928 "2024-09-11T09:42:11Z")
Hi! So I am currently at an early development stage of a CG production and I would love to use substrate. However it is currently “experimental” and therefore could be risky. I am wondering if anyone knows the extent of… --- ## [VALIDATION FAIL on build HLOD packages.](https://forums.unrealengine.com/t/validation-fail-on-build-hlod-packages/1989863)
**Author:** [@PledgedRanger](https://forums.unrealengine.com/u/PledgedRanger)\ **Replies:** 10\ **Last updated:** [August 28, 2024, 4:34am UTC](https://forums.unrealengine.com/t/validation-fail-on-build-hlod-packages/1989863 "2024-08-28T04:34:04Z")
Please select what you are reporting on: Unreal Editor for Fortnite What Type of Bug are you experiencing? Stability Summary I build my HLODs on a brand new map with a landscape and Fortnite walls. The error continuall… --- ## [GetAgents function from FortTeamCollection bugged](https://forums.unrealengine.com/t/getagents-function-from-fortteamcollection-bugged/1212138)
**Author:** [@nachetoncio](https://forums.unrealengine.com/u/nachetoncio)\ **Replies:** 11\ **Last updated:** [June 30, 2024, 10:46am UTC](https://forums.unrealengine.com/t/getagents-function-from-fortteamcollection-bugged/1212138 "2024-06-30T10:46:47Z")
Hello, I might have found a bug with the GetAgents(InTeam:team) function of the fort\_team\_collection interface. The case is the following: We started with 4 members at the same team in a uefn session, and the GetAgents… --- ## [I hate UEFN](https://forums.unrealengine.com/t/i-hate-uefn/1791499)
**Author:** [@MrFusion1475](https://forums.unrealengine.com/u/MrFusion1475)\ **Replies:** 2\ **Last updated:** [April 8, 2024, 5:06am UTC](https://forums.unrealengine.com/t/i-hate-uefn/1791499 "2024-04-08T05:06:16Z")
THIS IS ALL ABOUT ERRORS IN VERSE AND UEFN I MADE A COPY PASTE OF EVERY CODE TO VERSE IT DIDNT WORK AND THE SUPPORT TEAM IS DISGUSTING AND UEFN SESION IS BROKEN I HAD GREAT IDEAS FOR MAPS THEN UEFN SAID NAH FIRSTLY, I WA… --- ## [How paint in spline mesh in unreal engine 5.2](https://forums.unrealengine.com/t/how-paint-in-spline-mesh-in-unreal-engine-5-2/1696664)
**Author:** [@Realracing6894](https://forums.unrealengine.com/u/Realracing6894)\ **Replies:** 0\ **Last updated:** [February 18, 2024, 4:46am UTC](https://forums.unrealengine.com/t/how-paint-in-spline-mesh-in-unreal-engine-5-2/1696664 "2024-02-18T04:46:09Z")
Hello i create a road using landscape spline in unreal engine 5.2 after create a road i want to paint in the road .and i use mesh paint and landscape paint for paint in spline mesh in unreal engine 5.2 but not work. spli… --- ## [\[Critical\] Level Sequence Director. PROJECT IS NOT VALID PROJECT VALIDATION FAILED Validation Error: LEVEL SEQUENCE DIRECTOR. Disallowed Object Not Allowed Level Sequence DIRECTOR - Animation BUG](https://forums.unrealengine.com/t/critical-level-sequence-director-project-is-not-valid-project-validation-failed-validation-error-level-sequence-director-disallowed-object-not-allowed-level-sequence-director-animation-bug/1623674)
**Author:** [@PledgedRanger](https://forums.unrealengine.com/u/PledgedRanger)\ **Replies:** 1\ **Last updated:** [February 6, 2024, 1:03am UTC](https://forums.unrealengine.com/t/critical-level-sequence-director-project-is-not-valid-project-validation-failed-validation-error-level-sequence-director-disallowed-object-not-allowed-level-sequence-director-animation-bug/1623674 "2024-02-06T01:03:29Z")
Reference ID 91ef3d0f-4f81-6624-198d-c6a533aab6d2 Please select what you are reporting on: UEFN What Type of Bug are you experiencing? Devices Summary I just spend Three Days 16 Hours a day on this level sequence. It … --- ## [I get an infinite loop when loading saves in Horror Engine (UE4) 😢](https://forums.unrealengine.com/t/i-get-an-infinite-loop-when-loading-saves-in-horror-engine-ue4/1634008)
**Author:** [@deklazon](https://forums.unrealengine.com/u/deklazon)\ **Replies:** 0\ **Last updated:** [January 22, 2024, 10:55am UTC](https://forums.unrealengine.com/t/i-get-an-infinite-loop-when-loading-saves-in-horror-engine-ue4/1634008 "2024-01-22T10:55:42Z")
Who develops on the “Horror Engine” template in UE4? I have quite a lot of triggers and events at my level. I enable autosaves on some of them. If I load the saves I made at the beginning of the level, then everything … --- ## [Island Shenanigans: Navigating the Fortnite Creative Score Houdini HUD / UI Not Working Bug in the Whimsical Realm of Island Settings, UI HUD, and Score Surprises](https://forums.unrealengine.com/t/island-shenanigans-navigating-the-fortnite-creative-score-houdini-hud-ui-not-working-bug-in-the-whimsical-realm-of-island-settings-ui-hud-and-score-surprises/1603836)
**Author:** [@PledgedRanger](https://forums.unrealengine.com/u/PledgedRanger)\ **Replies:** 0\ **Last updated:** [January 10, 2024, 9:45am UTC](https://forums.unrealengine.com/t/island-shenanigans-navigating-the-fortnite-creative-score-houdini-hud-ui-not-working-bug-in-the-whimsical-realm-of-island-settings-ui-hud-and-score-surprises/1603836 "2024-01-10T09:45:14Z")
Reference ID 5212f2d5-4739-4923-0913-268f34327dba Please select what you are reporting on: Unreal Editor for Fortnite What Type of Bug are you experiencing? UI/Tools Summary :police\_car\_light: Attention, Gamers and Bu… --- ## [World Partition: enable Streaming Stuck on when unchecked. Preview Grid Stuck on when in gameplay and editor...](https://forums.unrealengine.com/t/world-partition-enable-streaming-stuck-on-when-unchecked-preview-grid-stuck-on-when-in-gameplay-and-editor/1383145)
**Author:** [@PledgedRanger](https://forums.unrealengine.com/u/PledgedRanger)\ **Replies:** 3\ **Last updated:** [December 26, 2023, 4:31pm UTC](https://forums.unrealengine.com/t/world-partition-enable-streaming-stuck-on-when-unchecked-preview-grid-stuck-on-when-in-gameplay-and-editor/1383145 "2023-12-26T16:31:27Z")
World Partition Setup Enable Streaming Enable Streaming \> Turned Off (Preview Grid Showing) Preview Grid \> Turned Off ( Grid Still Showing) Preview Grid \> Turned ON… ( Grid Not Showing) Major Bug. A few ot… --- ## [Can't copy and paste actors?](https://forums.unrealengine.com/t/cant-copy-and-paste-actors/406359)
**Author:** [@Virtual\_Bones](https://forums.unrealengine.com/u/Virtual_Bones)\ **Replies:** 4\ **Last updated:** [November 23, 2023, 3:53pm UTC](https://forums.unrealengine.com/t/cant-copy-and-paste-actors/406359 "2023-11-23T15:53:43Z")
Hello, I have a game project that requires a lot of Ctrl + c / Ctrl + v to do fences. I cant seem to copy and paste actors in my game. Any help? --- ## [Get Viewport size returning wrong value in android in UMG?](https://forums.unrealengine.com/t/get-viewport-size-returning-wrong-value-in-android-in-umg/348848)
**Author:** [@anonymous\_user\_f287f87d](https://forums.unrealengine.com/u/anonymous_user_f287f87d)\ **Replies:** 3\ **Last updated:** [November 16, 2023, 3:31am UTC](https://forums.unrealengine.com/t/get-viewport-size-returning-wrong-value-in-android-in-umg/348848 "2023-11-16T03:31:24Z")
Hi UE4 answerhub, The GetViewPortSize node in UMG returning wrong size while running in android (returning 0). The same returns 931 while running in editor. Here I am attaching the screenshot for further comfort . --- ## [UGameplayModMagnitudeCalculation issue](https://forums.unrealengine.com/t/ugameplaymodmagnitudecalculation-issue/1336484)
**Author:** [@lmperitum](https://forums.unrealengine.com/u/lmperitum)\ **Replies:** 0\ **Last updated:** [October 18, 2023, 9:17am UTC](https://forums.unrealengine.com/t/ugameplaymodmagnitudecalculation-issue/1336484 "2023-10-18T09:17:42Z")
There is a built-in unreal class - UGameplayModMagnitudeCalculation. It has the only function that can be overridden in blueprints: CalculateBaseMagnitude. There is a certain set of helper functions in the class that… --- ## [Got crash after updating 5.1 with Niagara graph](https://forums.unrealengine.com/t/got-crash-after-updating-5-1-with-niagara-graph/727114)
**Author:** [@CicadaKim](https://forums.unrealengine.com/u/CicadaKim)\ **Replies:** 15\ **Last updated:** [October 11, 2023, 2:40pm UTC](https://forums.unrealengine.com/t/got-crash-after-updating-5-1-with-niagara-graph/727114 "2023-10-11T14:40:11Z")
I was using UE5.0.1 for my project. I just updated engine to 5.1.0. Then, I got crash after launch editor. The crash indicates LogWindows: Error: appError called: Assertion failed: !bIsForCompilationOnly \[File:D:\\UE5… [Next page](https://forums.unrealengine.com/tag/bugs/2091.md?match_all_tags=true&page=1&tags%5B%5D=bugs)