Unreal Engine Issues
Unreal Engine Issues
Particles Do Not Obey Lighting Channels
UE - Niagara - Apr 17, 2018Particle systems ignore lighting channels - no matter what channel a light is on (even if no channels are selected), it will affect lit particles. Changing lighting channels on the particle itself h ...
'Set Timer by Function Name' not able to call functions that return an Output Parameter
UE - Gameplay - Jul 16, 2018When using a 'Set Timer by Function Name' node with a Function that has an Output parameter it will fail at executing the Function. If the Function is called with an Event BeginPlay node it will fu ...
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 - Anim - 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 ...
Crash in editor after disabling AISystem in Worldsettings
UE - AI - May 16, 2018After disabling the World Option bEnableAISystem, clicking with the right mouse button on the asset browers (in an empty place) casues the editor to crash. ...
Crash when creating new projects or converting copies of old ones in Japanese
UE - Editor - UI Systems - Slate - Dec 4, 2014There's a crash in FCharacterList::GetKerning() when using the editor in Japanese that is apparently fixed in one of these three changelists: CL# 2370014, 2370050, and 2370040 But they were not ...
Blueprint 'Select' node: nodes connect to all input pins are evaluated while only one input is needed
UE - Gameplay - Blueprint - Aug 15, 2015Originally marked Won't Fix in 2017. Issue reopened on May 1, 2024. All inputs of a Select blueprint node are evaluated, even though in the end only one value is selected. This is wasteful work. ...
Replace Reference feature is not replacing textures with new selected texture
Tools - Jan 4, 2017Workaround:Open M_TableRound, move a node. Save the MaterialReopening the project seems to fix the issue Replacing the reference of the deleted table texture is rendering default material. Note T ...