Unreal Engine Issues
Unreal Engine Issues
Migrating a soft reference in a struct from 4.17 to a newer version of the engine results in the variable being changed to an integer
UE - Gameplay - Blueprint Editor - Mar 5, 2018When migrating a struct with a soft reference from 4.17 (or older) to a newer version of the engine, the soft reference will have it's default value converted to an integer after a new member variab ...
"Distance Field Resolution Scale" in Build Settings is set to 0 by importing assets via "Import into a level"
zComponent - Archive - 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 ...
Backout attempted fix for - AutoSize triggers ensure on shortened Skel Anim Section moved past anim length
zComponent - Archive - May 29, 2026In Sequencer, calling "Edit > Auto Size" on a UMovieSceneSkeletalAnimationSection triggers the LowerBound > UpperBound ensure in UMovieSceneSection::SetRange (MovieSceneSection.h:333) when the secti ...
Packaging fails with Event Driven loader enabled and two function libraries reference each other
UE - Foundation - Core - Mar 29, 2017Packaging fails with Event Driven loader enabled and two function libraries reference each other even though the functions referenced in each library to NOT call each other in such a way as to creat ...
Launching on IOS, sessions do not appear in the Session Frontend
UE - Networking - Oct 17, 2018Licensee reports: Dug into this further and our iOS devices aren't receiving any of the handshake messages sent by the Session Frontend (or any other UDP messages for that matter) because multicast ...
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 ...
[CrashReport] Crash trying to destroy an uber graph frame because the RawPointer is still set
UE - Gameplay - Blueprint - Jul 21, 2017This is a trending crash in the 4.17 Preview. Users have not provided any descriptions of their actions when the crash occurred. Source Context 2408 uint8 *Data = (uint8*)Dest; 2409 ...