Unreal Engine Issues
Unreal Engine Issues
Creating a Blueprintable Struct that contains a Tmap results in Editor Crash
Tools - Sep 6, 2019Any blueprint with a TArray of a struct containing a TMap crashes the editor when adding elements ...
Slate Widget fails to compile once added to a new project
UE - Foundation - Core - Jan 28, 2015Slate Widget fails to compile when you add it to a new project. Expected as a user that anything in that default list should be able to be added and compile fine without making any changes. Compil ...
Assertion occurs when undoing a Child State's unparenting from another Child State in AI State Trees, leading to a crash.
UE - AI - StateTree - Apr 15, 2022Assertion occurs when undoing a Child State's unparenting from another Child State. Repro Rate: 5/5Assertion failed: false [File:D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Public\Widgets\Views ...
Level Instance Property Override: Actor::Tags overridden pre-CS but clobbered by RerunConstructionScripts with no post-CS re-apply
UE - World Creation - Worldbuilding Tools - May 4, 2026Summary When using the Level Instance Property Override system, overrides applied to `AActor::Tags` are silently lost for Blueprint actors whose Construction Script assigns or appends to `Tags`. The ...
[CrashReport] Assertion failed on Linux: SharedContext.hGLContext in OpenGLLinux.cpp
UE - Platform - Linux - Jun 16, 2017This is a top community crash occurring on Linux. The two linked CrashGroups have nearly identical callstacks. A log file is attached. Additional information is currently unavailable. Callstack f ...
Crash creating local variable in ABP function
OLD - Anim - Dec 5, 2019Creating a local variable in an ABP function crashes ...
Cannot package project with landscape to mobile
UE - Platform - Mobile - Aug 4, 2016Cannot package project with landscape to mobile devices. Packaging fails with the following error: Fatal error! Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x00000002 U ...
[CrashReport] Assertion failed: TaskDataArray.Num() == Exporter->VolumetricLightmapTaskGuids.Num()
UE - Graphics Features - Lumen - Oct 2, 2017This is a trending crash coming out of the 4.18 Previews. Users have not provided any descriptions of their actions when the crash occurred, but at least two of the affected projects are being creat ...
[CrashReport] UE4Editor-MetalShaderFormat.dylib!FGenerateMetalVisitor::print_constant()
UE - Graphics Features - Sep 22, 2017This is an early trending crash coming out of the 4.18 previews. It occurs on Mac, and all affected project names indicate it is related to AR. Users have not provided any descriptions of their ac ...
Lyra: Check triggered when changing the "Entry Widget Class" property on W_SettingsPanel
UE - Content - Sample - May 2, 2022Looks like we are hitting a check when you try and change the default widget class for this. ...