Unreal Engine Issues
Unreal Engine Issues
Selecting Reimport on a virtual texture results in crash
UE - Graphics Features - Nov 14, 2019Reimporting a virtual texture results in a crash. Tested in: 4.24P2 CL#10091930 , 4.25 CL#10183780 ...
Blueprints: ComponentClass override causes crash on loading maps with instances saved with base class
UE - Framework - Blueprint - May 1, 2026Context In actor blueprints, you can change an inherited component’s class in the editor by selecting it in a child blueprint and changing its Component Class in the Details panel. Problem When o ...
Crash when adding SK_Mannequin to a Level Sequence in QAGame
OLD - Anim - Feb 20, 2017This crash only occurs when the asset is dragged and dropped into the level. Workaround Add the asset to the level, then to the sequence. NOTE This does not occur in //UE4/Main ...
Crash when changing levels to a another with world partitions.
UE - World Creation - Worldbuilding Tools - World Partition - Nov 17, 2021Crash when opening a level through blueprint to go into level with world partitions enabled. This a not a regression due to being a new feature. ...
[CrashReport][Crash] UnrealEditor-Core!IMemoryReadStream::CopyTo()
UE - Rendering - Architecture - Apr 10, 2025Intermittent crash in virtual texture transcode. Usually mempy from nullptr but also occasionally we see the same callstack with memcpy to random location. ...
Opening Persona causes editor to crash on Linux
UE - Platform - Linux - Nov 17, 2016Attempting to open a skeletal mesh or animation in Persona causes the editor to crash. Regression: Yes Working: 4.13.2 - CL 3172292 Broken: 4.14.0 - CL 3195953 ...
Crash occurs when selecting Reset this Property to Default Value in the Class Settings of a new Child Animation Blueprint
UE - Anim - Runtime - Anim Blueprints - Oct 26, 2022This is a Regression. Tested in //UE5/Release-5.0 CL20979098 - "None" is not an option for the parent class and the "Reset this Property" is not initially there. Crash occurs when selecting Reset t ...
Crash when opening a sequence with an additive control rig track
UE - Anim - Sequencer - Apr 27, 2020The editor crashes when opening a sequence with an additive control rig track ...
Crash when adding a camera to the world in VR Mode
UE - Editor - Workflow Systems - May 31, 2017Dragging a Cine Camera Actor into the world causes the editor to crash. I reproduced this with both Oculus and Vive, however had a more successful repro rate with Oculus. ...
GC Clustering broken for USoundWave assets (crash)
UE - Foundation - Core - Mar 29, 2017Assert crashes Editor in the GC system during packaging due to USoundWave assets not being configured for GC clustering. Disabling GC clustering in project settings is a workaround, but the fix is ...