Unreal Engine Issues
Unreal Engine Issues
Vertex Colors distort after merge actors is used
OLD - Anim - Sep 11, 2017When using the merge actor tools with Vertex colors painted on, the resulting mesh will have those colors distorted. This issue occurs only with the resulting static mesh. This issue is a regression ...
Cameras rotate incorrectly in Sequencer when using Key All and Auto-Key options
UE - Anim - Sequencer - Dec 14, 2018Sequencer is having issues handling a camera rotation going past -180 or 180 degrees with multiple keyframes when Key All and Auto-Key options are enabled. This results in unwanted 180 degree flip w ...
Post Process Volume not updating in preview
UE - Platform - Mobile - Mar 4, 2019Wrong IDE loads when Visual Studio 2019 is selected
UE - Foundation - Cpp Tools - May 22, 2019Visual Studio 2019 does not load even when it is selected as the chosen IDE. Instead the editor loads Visual Studio 2017. If you create a new C++ class after switching the IDE and restarting the Edi ...
Engine Crashes When Converting an Int to Float For a Map Key In Blueprints
UE - Gameplay - Blueprint Editor - Dec 11, 2019The engine crashes when trying to automatically create a type conversion node when they are used a key for a map. Found in 4.24 CL#10570792 Reproduced in 4.25 Main CL# 10646676 ...
Volumetric fog flicker side screen
UE - Rendering - Architecture - Nov 29, 2023The flicker is visible in Epic scalability as well, it is just smaller on screen because the fog voxels are smaller (r.VolumetricFog.GridPixelSize). ...
Distance Field Ambient Occlusion artifacts when using dynamic resolution
UE - Rendering - Graphics Features - Mar 12, 2026Distance Field Ambient Occlusion produces artifacts when using Dynamic Resolution at lower framerates. ...
Substrate Unlit editor view mode renders black with Blendable GBuffer
UE - Rendering - Graphics Features - Substrate - Mar 18, 2026When using Substrate materials with SUBSTRATE_GBUFFER_FORMAT==0 (Blendable GBuffer), the Unlit editor view mode renders completely black. TopLayerData.UnlitViewBaseColor is never populated in the bl ...
Expand Node crashes engine
UE - Gameplay - Blueprint - Dec 4, 2014The engine crashes when after right-click > Expand Node on any composite node. Crash Report: [Link Removed] ...
GPU Particle Collision changes based on Normal Intensity on Colliding Surface
UE - Graphics Features - Jun 18, 2015Increasing the intensity of a Normal Texture on a colliding surface will cause the collision of GPU particles to behave strangely, looks to be falling through floor, when you are using a Constant Ac ...