Unreal Engine Issues
Unreal Engine Issues
[CrashReport] Mac crash - UE4Editor-SlateCore.dylib!SWindow::IsVisible()
UE - Platform - Apple - Oct 12, 2017This is a trending Mac crash coming out of the 4.18 previews. Most of the project titles experiencing this crash mention "AR" It is the exact same callstack and crashgroup as [Link Removed], but th ...
Material reroute node does not work with WorldAlignedTextures_Complex Inputs
UE - Rendering - Architecture - Materials - Oct 24, 2017There is an issue occurring with the Material reroute node as it does not work with WorldAlignedTextures_Complex when plugging into inputs. This issue appears to be similar to [Link Removed]. This i ...
Videos of certain sizes no longer display in media players
Media Framework - Oct 27, 2017Videos of certain sizes no longer display in the Media Player, this also applies to when the media player is a texture or in a material. This issue appears to be a regression. Versions Tested 4.16. ...
Monitor Directories does not auto import or re-import from network locations
UE - Editor - Content Pipeline - Import and Export - Nov 15, 2017Monitor Directories feature in the editor preferences does not auto import or re-import from network locations. There is no issue if the location of the folder is local. This issue does not appear t ...
Anim Slot Manager Options Disappear When "Use Small Tool Bar Icons" is Enabled in Editor Preferences
OLD - Anim - Feb 4, 2018When Use Small Tool Bar Icons option is checked in Editor Preferences, the icons for Save, Add Slot, and Add Group in the Anim Slot Manager are not longer visible but register as still there and rem ...
Blueprinted class fails to instance private objects if the hosting subobject's class inherits an instanced variable
UE - Gameplay - Blueprint - Feb 21, 2018Blueprints that contain an instanced private object that is nested under an instanced subobject and the defaults of that blueprint are set up using EditInLineNew, any instances of the blueprint will ...
fbx attribute curve import do not support correctly tangent at the start end end of the curve
UE - Editor - Content Pipeline - Import and Export - Sep 2, 2020We are not reading all the key flags and we do not import correctly start key and end key tangent. I create a shelve but this is not the complete fix, we must do this only if we do not have fbx ket ...
Copying collapsed graph with a node with a custom Exec pin results in duplicate pin name
UE - Framework - Blueprint Editor - Aug 17, 2022When duplicating a collapsed blueprint graph which has a node with a custom Exec pin, this results in blueprint compilation error that a duplicate named pin is found. Duplicated exec pins aren't ass ...
FAnimUpdateRateParameters::GetInterpolationAlpha appears to be returning an invalid value for TrailMode
UE - Runtime - Animation - Aug 5, 2023It appears that FAnimUpdateRateParameters::GetInterpolationAlpha is not returning a sensible value when running in TrailMode. Currently the only variable in the calculation is EvaluationRate which ...
FInstancedStruct member uproperties are not cached when "Generate Optimized Blueprint Component Data" is enabled
UE - Framework - Blueprint - Nov 18, 2025A licensee has encountered an issue where their FInstancedStruct isn't being gathered into CachedPropertyData when "Generate Optimized Blueprint Component Data" is enabled. The changes in [Link Remo ...