Unreal Engine Issues
Unreal Engine Issues
Rewind debugger would crash when recording a character using Pose search
UE - MVF Character - Animation - Aug 8, 2025Our character is using the Pose search setup from GameAnimation content example. The architecture of the system is most the same with some new function that account for some input difference and sp ...
AI in sublevel calling actors in persistent level crash editor when sublevel is not visible
UE - AI - Aug 11, 2016If an AI is moving between points in the persistent level but is located within a sublevel and the sublevel is set to not visible, there is a chance that the editor will eventually crash. Setting Is ...
Mac editor mobile preview crash with MSAA on
UE - Platform - Mobile - Mar 1, 2021setting GSupportsTimestampRenderQueries=false or r.GPUStatsEnabled=0 can fix it ...
Skeletal Mesh motion vector are output only for the last sample of Spatial Sample Count
UE - CAPT - Color Pipeline and Rendering - MRQ - Jan 24, 2025Skeletal Mesh motion vectors are output only for the last sample of Spatial Sample Count, while Static Mesh motion vectors are output in all samples. UDN: [Link Removed] Slack thread: [Link Remo ...
Height fog removed in split screen when player1 is facing the opposite direction.
UE - Rendering - Features - Sep 23, 2021Please see the UDN for a potential fix/workaround description. ...
Hardware Raytracing on Lumen can cause a crash on AMD Radeon GPUs
UE - Rendering - Features - Lumen - Jul 29, 2025Hardware Raytracing support can cause a crash on AMD Radeon GPUs when creating the RT pipeline state. ...
Tessellation doesn't render in certain levels of ContentExamples with Intel4600
UE - Graphics Features - Jan 20, 2017Tessellation will not be rendered in the examples inside of the Material_Nodes and Material_Properties levels of Content Examples. ...
Import overwrite Yes to All/No to All broken
Tools - Jan 4, 2017This is a painful bug for audio, because many times we are replacing hundreds if not thousands of files this way. ...
HTML5 fails during Package Command with ASM enabled
UE - Platform - Mobile - May 10, 2017While testing in //UE4/Release-4.16 CL 3432136 in Binary – Launching a blueprint - FirstPerson template to Chrome encounters an error.LogPlayLevel: Program.Main: ERROR: AutomationTool terminated wit ...
WindowsVideoRecordingSystem can start late to record when a Record/Start action is executed.
UE - Media Runtime - Media Framework - May 30, 2024The WindowsVideoRecordingSystem can start to record late when a StartAction is done. Not sure if it starts to record late, or the first seconds of the resulting video are ommited when the mp4 file i ...