Unreal Engine Issues
Unreal Engine Issues
Lumen reflection distortion
UE - Graphics Features - Lumen - May 30, 2024Lumen reflections appear distorted depending on the camera orientation. ...
Niagara Parameter Collection doesn't work for Simulation Stage
UE - Niagara - Jan 31, 2021In editor, custom primitive data dont work on instance static meshes in bp instance
UE - Framework - Components - Jun 25, 2024Changes to custom primitive data properties for instanced meshes placed in the editor work in-game but are not otherwise reflected in-editor. ...
Flickering in Material Editor Preview when Absolute World Position node used
UE - Graphics Features - Oct 17, 2017Creating a material with "Absolute World Position" node plugged into the "World Position Offset" input of the base Material node results in flickering in the preview window of the material editor. ...
Vertex Painting on Blueprint Static Mesh components lost on copy
UE - Gameplay - Components - Sep 1, 2015After vertex painting on a Static Mesh component of a Blueprint, the Vertex paint data is lost when the Blueprint is copied. Oddly, pasting into a text editor shows VertexColorData, but it seems to ...
Crash if editing the key properties of a collapsed key that has only 1 channel keyed
UE - Anim - Sequencer - May 27, 2016[CrashReport] UnrealEditor-AppFramework!SColorPicker::HandleParentWindowClosed(TSharedRef<SWindow,1> const &) [SColorPicker.cpp:1530]
UE - Editor - UI Systems - Sep 26, 2022Generated from CrashReporter This is NOT a regression. Tested in //UE4/Release-4.27 at CL18319896 Tested in //UE5/Main at CL 22175708 - Issue did not occur ...
Reverting a material through source control on Mac causes the thumbnail to become distorted
Tools - Oct 17, 2016The thumbnail on mac becomes distorted when the material is reverted through source control. This does not occur on windows and is not a regression. Opening the Material or right clicking on it ma ...
Dithered LOD transitions sometimes briefly flicker to the next LOD before fading
UE - Graphics Features - Jun 12, 2025When dithered LOD transitions occur, a brief flash of the next LOD level is first shown on the entire mesh after which the current LOD fades to the next (or previous) LOD. The flashing behavior only ...
Physical Material Masks do not work in non-editor builds
UE - Simulation - Physics - Aug 12, 2022Physical material masks are not working as expected in cooked builds. Licensee reports that the mask data is empty at runtime. ...