Unreal Engine Issues
Unreal Engine Issues
Force feedback effects only play the value at time 0 in curve
UE - Gameplay - Apr 21, 2017Force feedback effects will persistently play at whatever the value is set at Time 0 in the curve. This does not occur in UE4/Main ...
Spatialization no longer occurs when Non-Spatialized Radius is set above 0
UE - Audio - Sep 13, 2016Audio spatialization no longer occurs when Non-Spatialized Radius is set above 0 in a sound actor (instance or in a sound cue). I could not reproduce this issue in UE4/Main. ...
Two Sided Foliage doesn't receive VSM shadow with Opacity 0
UE - Graphics Features - Jan 25, 2024Two-Sided foliage materials with an Opacity of 0 ignore any shadows cast with Virtual Shadowmaps, even in a completely sealed environment. This did not happen in UE 5.1.1 ...
Specular Scale 0 on Light still affects Groom asset
UE - Rendering - Architecture - Jul 30, 2025When a light's Specular Scale is set to 0, the specular still affects hair / groom assets. The specular of other assets (like a shiny static mesh in the scene) is properly affected by the change. ...
Crash when making Android package in SlateTextShaper.cpp
UE - Editor - UI Systems - Slate - Apr 7, 2020Crash when outputting garbled text when creating Android package. It did not occur in my colleague's environment using English OS, but occurred in my environment using Japanese OS. This issue should ...
[CrashReport] Linux crash - /usr/lib64/opengl/nvidia/lib/libGLX_nvidia.so.0
UE - Platform - Linux - Jul 20, 2017This is a common Linux crash that has occurred since at least 4.14. ...
Morph target LOD over 0 not worrking with GPU skin
UE - Rendering - Architecture - RHI - Dec 17, 2019I do not know what happen here and I need the help of the rendering team to debug this issue. There is no log at all even with -d3debug If you import the file SK_LOD_Morph_Working.fbx its a similar ...
Area scattering defaults to 0.01 spacing when input is invalid
TM - Tools - Dec 18, 2025If the user provides an invalid input for Area spacing (for example, using the hotkey 'R' to check the raytraced image), the spacing defaults to a value of 0.01m. Depending on the size of the Area s ...
Setting Fixed Frame Rate Prevents Particle Collision In PIE, Standalone, and Packaged Game
UE - Graphics Features - Oct 12, 2016If you set the project to use a fixed frame rate, particle collision no longer works. ...
[CrashReport] GPU Hang on Linux - /usr/lib/nvidia-381/libGLX_nvidia.so.0
UE - Platform - Linux - Aug 16, 2017This is a trending GPU hang crash on Linux in 4.16 and 4.17. It is similar to [Link Removed] (nvidia-375) ...