Unreal Engine Issues
Unreal Engine Issues
Wrong calculation of "MaxAllocatedCountEstimate" inside FNiagaraRendererRibbons::GenerateDynamicData()
UE - Rendering - Architecture - Niagara - Mar 20, 2026Starting with UE 5.4, function FNiagaraRendererRibbons::GenerateDynamicData() from file [NiagaraRendererRibbons.cpp] attempts to calculate DynamicData->MaxAllocatedCountEstimate as such: DynamicDat ...
Cross-Compiling for Linux-ARM fails to compile
Tools - Aug 11, 2015Following the directions on the wiki for cross compiling on Linux ([Link Removed]) fails when trying to package the project. ...
Sequences in sub-levels only fire events in the persistent level
UE - Anim - Sequencer - Mar 28, 2016Sequences in sub-levels only fire events in the persistent level. I don't know if they're expected to be firing in all levels or just the sub-level ...
Dragging a BP variable into a category can produce inconsistent results
UE - Gameplay - Blueprint Editor - Jan 18, 2019The drag-onto-category operation is assigning the prettified category name, not the actual category name, resulting in variables that are not actually in the same category, even though they appear t ...
FAnimationRuntime::BlendPosesPerBoneFilter() causes an assertive crash when Skeletal Mesh LOD is changed
UE - Runtime - Animation - Nov 1, 2023The crash occurs from "check(BoneBlendWeights.Num() == NumBones);" This crash occurs when the following conditions are met;The skeletal mesh LOD is changed.The number of bones is difference between ...
Swapping the Child Actor Class of a ChildActorComponent back to a previously selected BP leads to an Editor crash from illegal Renaming
UE - Framework - Components - Sep 11, 2024A fatal error occurs if we change a Child Actor Class from one BP (ex. "BP_A") to a different BP ( ex. "BP_B") and later change it back to the first BP (ex. "BP_A") without compiling the BP between ...
CameraShake track in Camera Animation Sequence not playing on PIE
zComponent - Archive - Oct 5, 2022CameraShake works fine in Camera Animation Sequence's Cine Camera Actor Preview. But not played on Play in Editor mode. ...
naming box collision in player character renames overlap begin event in actor calling player character
UE - Gameplay - Blueprint - Jan 28, 2016naming box collision in player character renames overlap begin event in actor calling player character ...
Plugin OculusAudio module could not be found when packaged through UFE in binary
UE - Foundation - Cpp Tools - Plugin System - Jun 3, 2015This issue also occurs This is the same error as in [Link Removed]. Discovered by a user on AnswerHub, I was able to reproduce this error in today's 4.8 branch, CL 2575437 Attached to his thread ...
'Is Case Sensitive' option on the Switch on String node doesn't toggle correctly
UE - Gameplay - Apr 22, 2015'Is Case Sensitive' option on the Switch on String node doesn't toggle correctly. User Description: The "Is Case Sensitive" option when you use a switch on string function in blueprint doesn't wor ...