Unreal Engine Issues
Unreal Engine Issues
Animating blueprint mesh duplicates uncontrollably
UE - Gameplay - Components - Apr 15, 2015When animating within a blueprint of a subclass created in c++, the animating mesh replicates itself uncontrollably. Added to .h: UPROPERTY() UBoxComponent* BoxComp; UPROPERTY() USkeletalMeshCompo ...
Enum Meta is being ignored when project is packaged
Tools - Nov 4, 2014When using UMeta on Enums, text is ignored when doing Enum to String on a packaged project. ...
A partially broken Geometry Collection ends up with garbage CollisionGroup data that can lead to strange behaviors
UE - Simulation - Physics - Destruction - Apr 27, 2025A partially broken Geometry Collection (GC) ends up with garbage CollisionGroup data that can lead to strange behaviors. The licensee has noticed that a GC that goes thru a field applying ExternalS ...
"Primitives with unbuilt interactions" not clearing after lighting scene rebuild
UE - Graphics Features - Oct 29, 2021Regression No, according to affect version 4.26 and 4.27 [2021.10.29-17.01.06:085][830]Primitives with unbuilt interactions: 6[2021.10.29-17.01.06:085][830] Primitive FoliageInstancedStaticMeshComp ...
In BP/Python Editor Utilities, function SetEditorProperty() unexpectedly fails for Actor Reference Properties on External Actors.
UE - World Creation - Worldbuilding Tools - May 19, 2024As part of the Python and Editor Scripting Tools, it is possible to programmatically set variables in actor instances of the current level just like when using the Details Panel in the Level Editor. ...
[CrashReport] Commandlet crash in UE4Editor_CoreUObject!UPackage::Save
UE - Foundation - Core - May 2, 2016This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Error message: Assertion failed: Pair != nullptr [Link Removed] [Line: 520] Source Context:4 ...
Crash when attempting to convert a sequencer actor into a BP Class
UE - Anim - Sequencer - Nov 15, 2016Error message: Assertion failed: IsValid() [Link Removed] [Line: 752] Source Context: 738 return *this; 739 } 740 741 /** 742 * Converts a shared ...
[CrashReport] UE4Editor_Core!FText::IsEmpty() [text.cpp:230]
Tools - Apr 6, 2016This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Error message: Assertion failed: Index >= 0 [Link Removed] [Line: 401] Source Context: 215 ...
[AI] Navmesh does not generate correctly on a plane that has a slope of 45 degrees or more.
UE - AI - Navigation - Sep 23, 2022Navmesh generation appears to have issues handling terrain and planes that are at 45 degree or steeper angles even if the agent max slope is set to allow for such movement. While the issue occurs at ...
Editor mode tabs can get corrupted in the layout
UE - Editor - Workflow Systems - Apr 2, 2024This can happen with any mode. What actually happens is, when closing the Editor, the Editor saves its layout before closing the active Editor Mode, which leads the editor to think the tabs are sti ...