Latest Issues and Bug Reporting (Unreal Engine) topics

Topic	Replies	Views	Activity
About the Issues and Bug Reporting (Unreal Engine) category	0	34	January 26, 2026
Editor Mouse Sensitivity editor , unreal-engine	7	214	October 19, 2026
[UE 5.8.3][Gameplay] ACharacter::CheckJumpInput: "CanJump() && UseLegacyDoJump ? A : B" parses as "(CanJump() && UseLegacyDoJump) ? A : B", so DoJump is called when CanJump() is false unreal-engine	0	2	October 19, 2026
Modular Rig Wheel Gas Issue question , unreal-engine	0	9	October 18, 2026
[UE 5.8.3][Editor] An actor with runtime-generated PCG output gains a None entry in InstanceComponents for every generated component each time its level is reopened and saved, without limit unreal-engine	0	9	October 18, 2026
[UE 5.8.3][Editor] Duplicating or copy-pasting an actor with runtime-generated PCG output saves that output into the copy, which then shows it twice when the level is reopened unreal-engine	0	8	October 18, 2026
Mesh Terrain just not working unreal-engine , open	11	914	October 18, 2026
Unreal Engine Installation completely unresponsive unreal-engine	0	22	October 18, 2026
creative map bug , server bug bug-report , fortnite , unreal-editor-for-fortnite , fortnite-creative	0	5	October 18, 2026
Cannot install Unreal Engine: empty Library, Install Engine and + do nothing (Windows 11) unreal-engine	1	28	October 18, 2026
Constant Error when Publishing UEFN Map (Need Help) unreal-engine	0	8	October 18, 2026
Linux (non-Shipping): process aborts at exit with "free(): invalid size" in OPENSSL_cleanup, because UECurl's ConditionalShutdown restores OpenSSL's allocator while OpenSSL still holds memory from Unreal's allocator unreal-engine	0	7	October 18, 2026
[D3D12][5.8] "Out of video memory" crash with VRAM and RAM free bug-report , unreal-engine , fixed	23	1912	October 18, 2026
CubeGrid’s corner mode and Ctrl+drag shortcuts do not work in 5.8's Viewport editor , bug-report , unreal-engine	5	294	October 18, 2026
LogFileManager: Warning: MoveFile was unable to move ... .tmp file to EditorPerProjectUserSettings.ini (Error Code 183), retrying in .5s... editor , unreal-engine	3	226	October 17, 2026
Launcher 20.3.5: 0 Unreal Engine entitlements, cannot install engine (new account) unreal-engine	1	27	October 17, 2026
UE 5.8.1 iOS Archive fails with "cp: <App>.app: Not a directory" during PhaseScriptExecution on Xcode 26.1.1 unreal-engine	9	264	October 17, 2026
WmfMedia: switching webcam format during playback stalls after MESessionStopped (UE 5.8.3) unreal-engine	0	11	October 17, 2026
[UE 5.8.3][Editor] ModelContextProtocol logs every JSON-RPC error reply at Error, so a client probing server/discover (MCP 2026-07-28) shows up as an editor error on every connection unreal-engine	0	16	October 17, 2026
[UE 5.8.3] Every world teardown logs “Unable to find RecastNavMesh instance while trying to create UCrowdManager instance”, because UCrowdManager tries to rebuild while UNavigationSystemV1::CleanUp unregisters the navmesh unreal-engine	0	11	October 17, 2026
[UE 5.8.3] Mac: every audio device logs "Error querying Sample Rate: 2003332927", because AudioMixerCoreAudio asks the device for the system's default-output-device property unreal-engine	0	13	October 17, 2026
[UE 5.8.3][Editor] Apple Silicon Mac: iOS device detection never backs off, because FDeviceQueryTask resets RetryQuery on every pass unreal-engine	0	14	October 17, 2026
[UE 5.8.3][Editor] Apple Silicon Mac: the Mac libimobiledevice tools are x86_64-only, so the editor logs a failed idevice_id launch every 10 seconds when Rosetta is not installed unreal-engine	0	14	October 17, 2026
Crash when changing scalability settings with Android Material Quality overrides and runtime scalability changes enabled bug-report , unreal-engine	2	75	October 16, 2026
no arranca el juego unreal-engine	1	26	October 16, 2026
UE 5.8.2 — Severe GPU Residency Stalls During World Partition Distance-Field Buffer Resizing question , unreal-engine	0	20	October 16, 2026
MetaHuman Creator (in-editor plugin) AutoRig + texture download fail with a 300s HTTP timeout / "Server Error" from non-US regions (5.6/5.7/5.8, regression from 5.5) unreal-engine , metahuman	6	268	October 16, 2026
Water/NiagaraFluids: Grid2D_SW_ComputeBottomContour comes out inverted on NVIDIA D3D12 drivers 610.88+, so shallow-water sims stay dry (driver miscompile, workaround inside) bug-report , unreal-engine	0	17	October 16, 2026
Metasound cannot change multiple elements in array unreal-engine	0	10	October 16, 2026
dissappearing unreal-engine	0	16	October 15, 2026