UPDATE!
The 4.18.1 Hotfix is now live! This hotfix resolves over 70 important issues in the 4.18 release.
Fixed in 4.18.1
Fixed! UE-51426 HLOD with texture binning on introduces ugly black seams
Fixed! UE-51931 [CrashReport] UE4Editor_AnimGraph!FCSPose<FCompactHeapPose>::GetComponentSpaceTransform() [bonepose.h:533]
Fixed! UE-51620 Hang in shutdown of multi-PIE when using procedural sound waves (or synth components)
Fixed! UE-51591 Hot reload of QAGame hangs the editor
Fixed! UE-51917 [CrashReport] UE4Editor_Core!FMath::ComputeBaryCentric2D() [unrealmath.cpp:1951]
Fixed! UE-51626 Very long hang occurs when selecting all bodies in a physics asset
Fixed! UE-51721 [CrashReport] UE4Editor_Engine!UBodySetup::FinishCreatingPhysicsMeshes() [bodysetup.cpp:464]
Fixed! UE-51597 [CrashReport] Crash in PHAT on LeftMouse click while moving ragdoll asset during Simulate
Fixed! UE-51916 [CrashReport] UE4Editor_CoreUObject!FWeakObjectPtr::Get() [weakobjectptr.cpp:81]
Fixed! UE-51925 Unable to compile BuildPatchTool
Fixed! UE-51842 4.18.1 build is broken on Ubuntu 14.04 (UBT compile error due to “?.” construct)
Fixed! UE-51472 Hot reload iteration time regression.
Fixed! UE-49050 Editor integration for Visual Studio Code on Mac, Linux and Windows
Fixed! UE-52055 Different macros used when compiling scripts from UAT
Fixed! UE-51855 Cannot package project with assets contained in a folder named “Wolf”
Fixed! UE-51180 Texture Render Targets do not render on Android
Fixed! UE-51443 GitHub 4143 : Add ‘.vscode’ folder to generated .gitignore
Fixed! UE-51621 Race condition in UBT
Fixed! UE-46858 Support for Visual Studio Code
Fixed! UE-51927 [CrashReport] UE4Editor_Kismet!FFindInBlueprintSearchManager::OnCacheAllUncachedBlueprints() [findinblueprintmanager.cpp:2095]
Fixed! UE-51504 Inherited TMap value of type UObject* is not saved on blueprint compile
Fixed! UE-51353 Function input Bool loses checked value when updating from 4.16 to 4.17
Fixed! UE-51267 WebGL1 fails to compile
Fixed! UE-51233 Match3 HTML5 encounters index out of bounds error
Fixed! UE-47782 Match3 Package Startup Video not playing on IOS
Fixed! UE-49588 Rsync Errors During Remote Build: Failed to Set Permissions
Fixed! UE-51747 GitHub 4174 : [BUG-FIX] Invalid ASTC texture versioning is corrected.
Fixed! UE-52235 Metal texture memory leak
Fixed! UE-51705 Crash upon launching packaged game with Share Material Shader code enabled
Fixed! UE-51695 Nvidia Shader Compiler Crash with Tessellation Compute Shaders
Fixed! UE-51863 Depth of Field Blur on Cinematic Camera Not Working Before Focal Point
Fixed! UE-47263 [CrashReport] Crash on Linux - FShaderCompilingManager::LaunchWorker()
Fixed! UE-51203 Vulkan ES3.1 Is Still Being Used Even when Not Selected as a Targeted RHI
Fixed! UE-52281 Crash during cook occurs on some Intel CPUs
Fixed! UE-51640 [CrashReport] Mac/Metal crash due to enabling Metal 2.0 on 10.12.6
Fixed! UE-51753 LightColor property for light component and skylight component are animating all other color properties
Fixed! UE-51750 Spawned skeletal animations don’t animate
Fixed! UE-51787 [CrashReport] UE4Editor_MovieSceneTracks!UMovieSceneCameraCutSection::GenerateTemplate() [moviescenecameracutsection.cpp:24]
Fixed! UE-52077 MediaFramework movies not playing properly in Shipping
Fixed! UE-51707 Videos of certain sizes no longer display in media players
Fixed! UE-51796 WmfMedia: Some WMV v2 files fail to render video
Fixed! UE-51789 Media: MediaPlaylist::AddFile adds a StreamMediaSource instead of a FileMediaSource
Fixed! UE-51012 [CrashReport] UE4Editor_MediaAssets!UMediaTexture::TickResource() [mediatexture.cpp:245]
Fixed! UE-51941 [CrashReport] UE4Editor_UnrealEd!FAssetEditorToolkit::GetDefaultTabIcon()
Fixed! UE-51848 Data Tables can no longer import numeric enum values
Fixed! UE-47464 [CrashReport] Fatal error: Cast of nullptr to Actor failed - UE4Editor_CoreUObject!CastLogError()
Fixed! UE-51509 Using the HighRes Screenshot command in a shipping packaged build crashes the game
Fixed! UE-51781 [CrashReport] ULevel::GetWorldSettings - UMaterialFunctionThumbnailRenderer:: Draw
Fixed! UE-51779 [CrashReport] UE4Editor_PropertyEditor!TWeakPtr<SDetailSingleItemRow,0>::Pin() [sharedpointer.h:1120]
Fixed! UE-51783 [CrashReport] ULevel::GetWorldSettings - UStaticMeshThumbnailRenderer:: Draw
Fixed! UE-51881 [CrashReport] FCurveEditorSharedData::FCurveEditorSharedData
Fixed! UE-52086 Linux: UI scale is sometimes not 1.0 on non-high-DPI monitors
Fixed! UE-51677 Linux: requirement for popcnt instruction unnecessarily prevents UE4 from compiling on old CPUs
Fixed! UE-51714 [CrashReport] Linux crash - FLinuxSplashState::InitSplashResources()
Fixed! UE-51699 Linux: 4.18 cannot be compiled on Ubuntu 17.10 due to missing xlocale.h
Fixed! UE-51843 UE4Game in 4.18 is broken for some third party software (hidden symbol elf_end() is referenced)
Fixed! UE-51709 [CrashReport] UE4Editor-ApplicationCore.dylib!FMacWindow::ApplySizeAndModeChanges()
Fixed! UE-49992 Opening the color picker causes values to change
Fixed! UE-51886 [CrashReport] UE4Editor_PropertyEditor!FObjectPropertyNode::GetValueBaseAddress() [objectpropertynode.cpp:373]
Fixed! UE-51724 [CrashReport] UE4Editor_PropertyEditor!FPropertyEditor::IsEditConditionMet() [propertyeditor.cpp:632]
Fixed! UE-51324 Crash updating a blueprint instanced foliage actor
Fixed! UE-48434 [CrashReport] UE4Editor_Foliage!FMulticastDelegateBase<FWeakObjectPtr>::CompactInvocationList() [multicastdelegatebase.h:159]
Fixed! UE-51604 Changing foliage quality during runtime crashes editor/game
Fixed! UE-51914 [CrashReport] UE4Editor_CoreUObject!FWeakObjectPtr::Get() [weakobjectptr.cpp:81]
Fixed! UE-52067 Crash when Gathering/Exporting Text in Loc Dashboard with multiple cultures are added.
Fixed! UE-51799 Japanese language input keys/Menu key zoom out graph view
Fixed! UE-51933 [CrashReport] UE4Editor_WorldBrowser!FMulticastDelegateBase<FWeakObjectPtr>::RemoveAll() [multicastdelegatebase.h:81]
Fixed! UE-51963 DaydreamVR stutters in 4.18 due to late update
Fixed! UE-51728 4.18 missing Oculus dash support
Fixed! UE-52098 Invoking quit menu on GearVR can cause app to freeze or crash
Fixed! UE-51736 Mobile multi-view doesn’t respect daydream support query
Fixed! UE-52127 Perf hit on GearVR; upscaling to a surface size bigger than we need.
Fixed! UE-51766 CPU perf regression when using IsHMDActive() on Oculus.
REMEMBER: Please report any new bugs you find by following the How To Report a Bug Guide