Unreal Engine Issues
Unreal Engine Issues
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 ...
[CrashReport] UE4Editor_Engine!ULevel::GetWorldSettings() [level.cpp:1781]
Tools - Aug 22, 2016This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Assertion failed: WorldSettings != ...
"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. ...
TUnion copy constructor causes the editor to assert due to Unrecognized TUnion subtype
UE - Foundation - Core - Mar 15, 2016The TUnion copy constructor causes the editor to toss an assert due to it claiming that the passed in TUnion is of an Unrecognized TUnion subtype. ...
[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 ...
World Partition Converter- Soft object pointers to actors kept in scripted sublevels are incorrectly remapped to the main world during in place conversion
UE - World Creation - Worldbuilding Tools - World Partition - Jul 1, 2022From user:"We have ran into an issue with soft object pointer fixup/remapping with the World Partition converter. If you have a sublevel that contains a level script and an actor that is hard refer ...
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 ...
Compile fails when attempting to launch on to Windows with Raw Input plugin enabled
UE - Gameplay - Input - Nov 9, 2016Compile fails when the user attempts to launch on to Windows with the Raw Input plugin enabled. Error:LogPlayLevel: xgConsole: Module.RawInput.cpp LogPlayLevel: xgConsole: d:\framework\engine\plug ...