Unreal Engine Issues
Unreal Engine Issues
[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 ...
Crash upon using EComparisonMethod as a variable in a struct
UE - Gameplay - Blueprint - Jul 17, 2017Having a variable of the type EComparisonMethod inside of a struct causes the editor to crash. This could be due to the variable being as part of the Development folders in code. Attempting to repro ...
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 ...
UnrealVS cannot be installed with VS2019 16.1
UE - Foundation - Cpp Tools - UnrealVS - Jun 3, 2019If a user has Visual Studio 16.1 installed, UnrealVS will report that it is not compatible and refuse to install. ...
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 related to refreshing Destructible Mesh - SaveExistingSkelMeshData()
UE - Simulation - Physics - Destruction - Jul 20, 2017This is a common crash affecting users in 4.16. User DescriptionsPressing the button to restart the basic mesh in the destruction editor causes the crash.Refreshing a Destructible Mesh that has had ...
Crash on play if a BP uses a ClearInstances node followed by an AddInstance node
UE - Graphics Features - Jul 21, 2017Crash on play if a BP manipulates a InstancedStaticMeshComponent by using a ClearInstances node followed by an AddInstance node. This is a blocker for the licensee. This is a regression: Working ...
Combined Translate and Rotate Mode broken when using Local Space
UE - Editor - 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 ...