Unreal Engine Issues
Unreal Engine Issues
Seamless travel not supported in single process warning while single process PIE is disabled
UE - Networking - Aug 23, 2016I initially noticed this when I had it set to a single process, but the same error was occurring when I had single process turned off. To double check that Seamless travel was enabled I ran the con ...
Some Twinmotion library assets do not render in Path Tracer in files with a large number of assets
TM - Rendering - Apr 17, 2025Reported in SF [Link Removed] In scenes containing large numbers of certain Twinmotion assets, when activating Path Tracer, some of the assets will not render. The assets will render normally in St ...
Open Sound Control Blueprint Plugin stops working around 1 minute during play
UE - Audio - Jun 3, 2020Messages are not received around 1 minute into playing when using OSC blueprint plugin. Test Project: [Link Removed] User workaround: https://forums.unrealengine.com/development-discussion/blu ...
LODBias causes landscape component to stop rendering if set >0 and Forced LOD set to -1
UE - LD & Modeling - Terrain - Landscape - Sep 12, 2016LODBias causes landscape component to stop rendering if set >0 and Forced LOD set to -1. NOTE If Forced LOD is set to 0, the component renders correctly. ...
Particle Cutout Crashes On Mobile Devices That Don't Support Hardware Instancing (Mali-400 GPU)
Particle cutout seems to crash on lower end mobile devices. We believe this is because there is an issue in the particle's SubUV feature. This happens only on devices that don't support hardware ins ...
When 1 AnimSequence asset is used for multiple SeuqnecePlayer, the override by AnimGraphOverrides affects other than the specified SequencePlayer.
UE - Anim - Runtime - Anim Blueprints - Jun 30, 2022If you use the same AnimSequence in multiple SequencePlayers in Base AnimBP and replace asset of one of SequencePlayers by AssetOverride in Child AnimBP, the result will be reflected in the other Se ...
Meshes made with the Pivot Painter tool don't work correctly on OpenGL ES3.1 + AEP
UE - Platform - Mobile - Dec 1, 2015In the project attached in original UDN post (too big to attach here) there is a tree that was created with the pivot painter tool that is animated. In the editor it behaves correctly, but trying t ...
Setting World to Meters in the World Settings to a large number will cause the console to show incorrectly in VR
UE - Platform - XR - Jan 4, 2016If the User changes the "World to Meters" setting in the World Settings this will cause the console to appear offset when brought up in VR. Note: the number used was 3600 ...
Compiling any material in UE 5.5.1 without ShaderCompiler JobCache results in a crash
UE - Rendering Architecture - Shaders - Jan 15, 2025Compiling any material with r.ShaderCompiler.JobCache=0 causes ShaderCompileWorker to crash. Reproduction steps cause a crash during Editor startup, but this bug may affect other scenarios where mat ...
Shader Complexity does not function properly with Android ES2 or ES3.1 set as the Preview Rendering level
UE - Platform - Mobile - Feb 25, 2019A user has reported that Shader Complexity is not working properly in 4.21 with the Android ES2 or 3.1 preview rendering level settings. Regression?: No It did not look this way in 4.21 and prior v ...