Unreal Engine Issues
Unreal Engine Issues
Niagara system loses source emitters when moving Engine from 4.22 or earlier to 4.23 or later.
UE - Niagara - Nov 29, 2019The following code causes this behavior.// NiagaraSystem.cpp for (FNiagaraEmitterHandle& EmitterHandle : EmitterHandles) { EmitterHandle.ConditionalPostLoad(NiagaraVer); if (!EmitterHandl ...
"Distance Field Resolution Scale" in Build Settings is set to 0 by importing assets via "Import into a level"
UE - Editor - Content Pipeline - Import and Export - Mar 18, 2022"Distance Field Resolution Scale" in Build Settings is set to 0 by importing assets via "Import into a level". That causes not to genarate any distance field meshes of all assets imported via "Imp ...
Crash when using Share Material Shader Code and Native Metal Libs with r.Shaders.Optimize=0
UE - Rendering Architecture - RHI - Mar 17, 2020Using r.Shaders.Optimize=0 with native metal libs results in a crash of the packaged build at runtime. Workarounds is to either not use native metal libs for text shaders or in MetalShaders.cpp co ...
[CrashReport] Mac/Metal crash due to enabling Metal 2.0 on 10.12.6
UE - Graphics Features - Oct 26, 2017This is an early trending Mac/Metal crash coming out of 4.18. Mark.S: _Revised Statement: Users are trying to enable Metal 2.0 on 10.12.6. The iOS settings panel lets me show warnings about this st ...
Map placed actor binding to another actor's Event Dispatcher (multicast delegate) results in duplicate bindings after blueprint recompile
UE - Framework - Blueprint - Apr 17, 2025Context Blueprint actors placed on the map can bind to another actor's event. If an ActorB has a reference to ActorA, it can bind to an event dispatcher in A by creating an event node in ActorB's e ...
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 ...
Combined Translate and Rotate Mode broken when using Local Space
UE - Editor - Workflow Systems - Dec 22, 2023From UDN: When using the Combined Translate and Rotate Mode we run into an issue where the rotation arrow moves twice as fast as the coordinate frame. The object itself rotates correctly, but if we ...
Fix support for compiling editor in monolithic
UE - Foundation - Cpp Tools - UnrealBuildTool - Jul 1, 2016Some licensees have reported good results compiling the editor in monolithic configurations - startup times are noticably shorter. I believe there are a number of things that need fixing up across t ...
Fix UMovieSceneSequence::FindPossessableObjectId for child bindings
UE - Anim - Sequencer - Nov 28, 2022Calling UMovieSceneSequence::FindPossessableObjectId with a guid that relates to a child binding does not work correctly because it just goes through the binding references and calls LocateBoundObj ...
Fixing up GoogleVRHMD static analysis warning
UE - Platform - XR - Oct 31, 2016[Line 1585] d:\build++ue4+release-4.14+compile\sync\engine\plugins\runtime\googlevr\googlevrhmd\source\googlevrhmd\private\googlevrhmdrender.cpp(42) : warning C6386: Buffer overrun while ...