Unreal Engine Issues
Unreal Engine Issues
Scroll bar thickness is unaffected when set below 4
UE - Editor - UI Systems - Apr 9, 2019Scroll bar thickness is unaffected when set below 4. There appears to be a minimum size in place that prevents the scroll bar from being set to a size lower than 4 ...
Editor stalls on Mac after key up, mouse up
UE - Platform - Apple - Dec 19, 2019UDN user reported a performance hit on Mac with the latest Hotfix release when the user is interacting with the editor either through keyboard or mouse input. This performance hit is noticeable whe ...
Lumen lighting in Presentations may appear darker than in Viewport
TM - Rendering - May 22, 2026Reported in SF [Link Removed] In some scenes with Lumen enabled, interior scene lighting without direct lighting can appear drastically darker in Cloud Presentations than they do in the editor view ...
[CrashReport] Couldn't find Shader TShadowDepthVSVertexShadowDepth_OutputDepthPositionOnly
UE - Graphics Features - Sep 7, 2017This is a common crash that has occurred since at least 4.16. The one user comment mentions a plugin, but many of the crashes occur on vanilla builds. User DescriptionsVaTexAltlas plugin enabled i ...
OnMovieClipFinished returns the incorrect movie name
Tools - Jun 29, 2017When OnMovieClipFinished is called, it will return the name of the movie clip that is about to be played rather than the clip that had just finished. Regression: Yes This did not occur in 4.15.3 B ...
Disabling Occlusion Culling and DBuffer Decals causers crash
UE - Graphics Features - Sep 1, 2017THere is a crash that occurs when opening a project after the Occlusion Culling and DBuffer decals option are unchecked. There are times where the Unreal Crash reporter catches the crash and display ...
"+Create Binding" added to a "Text Block" makes the Text not visible in Standalone Game
UE - Editor - UI Systems - Sep 6, 2017The visibility of the Text depends on the "+Create Binding" being added or not added. Now, If we go into our Widget Blueprint Designer > over in the Details panel under Content > Select "Bind" and ' ...
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 ...
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] ...