Unreal Engine Issues
Unreal Engine Issues
Assert when having too many VR devices
UE - Platform - XR - Aug 31, 2018Internal team is encountering a crash when adding too many VR devices. Email thread titled "Re: Crash Logs" The bug is an internal limit of devices the code supports, which is 8. If a controller o ...
The engine crashes when adding a new brush at newly created level by a specific way.
UE - LD & Modeling - Modeling Tools - Mesh Editing - Jun 17, 2019issuesFBSPOps::csgAddOperation returns null if BuilderBrush has no valid polys.The creating level on content browser never calls "UEditorEngine::InitBuilderBrush(NewWorld);". But "New level" button o ...
Exported Particle Emitter Tries to Reference Graphs of Original System
UE - Niagara - Dec 7, 2017User reports that the bug was initially discovered in 4.18 and then reproduced in 4.16 project (attached). Per User: For some reason when exporting this emitter to any other system bugs out. When ...
Xcode build will fail if project has a file that was added by the Editor that contains a Copyright (©) symbol
UE - Platform - Apple - Mar 27, 2017Code class files created by the Editor that include the Copyright symbol (©) are created with UTF-16 encoding. This encoding is not supported by Xcode on Mac, and will result in a build failure. In ...
BP hierarchy change triggers incorrect map actor load warning: AttachTo: '{0}' is not static {1}, cannot attach '{2}' which is static to it.
UE - Framework - Blueprint - Apr 11, 2024When a blueprint's component hierarchy is changed by changing a child component's mobility value to Static while deleting its parent component which has Movable mobility, levels saved with an outdat ...
FLowLevelMemTracker::GetTagAmountForTracker with CustomProjectTag returns 0 always
UE - Foundation - Core - May 7, 2020FLowLevelMemTracker::GetTagAmountForTracker with CustomProjectTag returns 0 always. Because of FLLMTracker::FLLMThreadState::GetFrameStatTotals don't amount to about CustomTags. Following code will ...
[CrashReport] Crash related to launching Tutorials - UE4Editor_Core!FText::FText()
Tools - Jul 5, 2017This is a common crash occurring in the 4.16.2 release. Records indicate this has also occurred in 4.16.0 and 4.16.1, but with less apparent frequency. User DescriptionsJust downloaded, clicking ...
Apex Cloth gets crazy after upgrade to 4.14
UE - Simulation - Physics - Dec 22, 2016It has no this issue if only open previous cloth assets in 4.14The issue happens only if reimporting or updating the .apx or .apb and assign to the material slotReimporting both FBX skeletalmesh file ...
SetDisableRetargeting does NOT work correctly for packaged project
UE - Anim - Runtime - Jan 4, 2023For example in cutscenes, the users use FBoneContainer::SetDisableRetargeting to temporarily use a specific shared animation without retargeting. But the function does not work correctly. We can fi ...
Cull Distance Volumes do not effect Blueprints or Skeletal Mesh Actors
UE - Graphics Features - Jul 31, 2014CHANGELIST: 2181118 BRANCH: UE4 https://udn.unrealengine.com/questions/166371/cull-distance-volume-bug.html DESCRIPTION: Cull distance volumes don't seem to cull blueprints or meshes inside a bluep ...