Unreal Engine Issues
Unreal Engine Issues
Properties not serialized when moving actor/component depending on unrelated specifiers
UE - Framework - Blueprint - Sep 25, 2023When an actor is moved on the level editor viewport, it is reconstructed along with its components, which at first makes their properties reset to their default state. Thankfully, this does not happ ...
Interchange GLTF importer truncates skeletal mesh bone influences to 4 per vertex
UE - Editor - Open File Formats - Aug 21, 2026cf https://forums.unrealengine.com/t/interchange-gltf-importer-truncates-skeletal-mesh-bone-influences-to-4-per-vertex/2745391/2 Original message The UE5 Interchange GLTF importer appears to trunc ...
[CrashReport] Crash on Mac during cook - UEditorEngine::UpdateAutoLoadProject()
UE - Platform - Apple - Jun 6, 2017This is a top crash on Mac. This crash has only occurred on the 4.16.1 release (there are no records of it in 4.16.0). Repro steps are currently unknown, but the crash occurs in Commandlet mode and ...
[CrashReport] Crash on Mac related to editor close
UE - Platform - Apple - Jun 6, 2017This is a long-standing Mac crash that occurs with low frequency, but has affected more than 500 users since it started (possibly in the 4.11 release) It has recently been experienced internally by ...
[CrashReport] UE4Editor-UnrealEd.dylib!TBaseUObjectMethodDelegateInstance<false, UEditorEngine, TTypeWrapper<void> ()>::Execute()
UE - Platform - Apple - Nov 10, 2017This is a longstanding but low frequency Mac crash. Users have not provided any descriptions of their actions when the crash occurred. Callstack from Log[2017.10.26-22.22.57:828][183]LogSavePackag ...
[CrashReport] Crash on Mac - UE4Editor-SlateCore.dylib!SWindow::IsVisible()
UE - Platform - Apple - Jun 23, 2017This is a common crash on Mac in the 4.16 release, and has occurred with low frequency since at least 4.11. Users have not provided any descriptions, so additional information is currently unknown. ...
Enhanced Input Gesture keys (Pinch/Rotate/Flick) never release after touch ends — regression in 5.8
UE - Gameplay - Input - Aug 20, 2026POST LINK: https://forums.unrealengine.com/t/enhanced-input-gesture-keys-pinch-rotate-flick-never-release-after-touch-ends-regression-in-5-8/2745006 POST BODY:Summary An Input Action mapped directl ...
Prevent unnecessary rebuilds of windows resource files
UE - Core - Cpp Tools - UnrealBuildTool - Sep 20, 2023How Necessary are BUILT_FROM_CHANGELIST and BUILD_VERSION in Resource Files? We've been investigating ways to improve the speed of our iterative engine builds, and have found that the vast, vast maj ...
SaveGeneratedTexture2DAsset can crash when overwriting an existing asset
UE - Texture - Nov 28, 2025SaveGeneratedTexture2DAsset can crash for a variety of reasons when overwriting an existing texture asset. When no existing asset exists, the function simply moves the provided transient Texture ass ...
[CrashReport] UE4Editor_Renderer!FGlobalShader::SetParameters<FRHIPixelShader * __ptr64,FRHICommandList>() [globalshader.h:134]
UE - Graphics Features - Jun 29, 2016This JIRA was created from crash reports submitted by users due to it being one of the top crashes occurring in 4.12.4 This might be a regression because the crash has only just started in 4.12.4. ...