Unreal Engine Issues
Unreal Engine Issues
Add Substrate Material Support to Lumen Performance Overview
UE - Graphics Features - Substrate - Feb 10, 2025There is a discrepancy when inspecting Substrate materials in the Lumen Performance Overview. Compared to viewing non-Substrate materials the overview show all surfaces in red indicating that Lumen ...
Disabled Skeletal Mesh Sections cause Shadow Ray Tracing Flicker
UE - Rendering - Graphics Features - Ray Tracing - Dec 12, 2025If a skeletal mesh has a section disabled the ray traced shadow will flicker when the camera or itself moves. Previously in 5.6.0 no raytraced shadow would appear if a section was disabled. This wa ...
Depth Fade breaks Lit Trans. Particles Casting Shadows
UE - Niagara - Dec 8, 2015Adding a Depth Fade node into the Lit Translucent Material used on a Particle System will cause the particle to not cast Shadows. The behavior is a regression from 4.9.2. 4.9.2:[Image Removed] 4. ...
[SM5] Material.usf Error when Previewing Material Function Output
UE - Graphics Features - Jul 21, 2016A user on the AnswerHub found an SM5 material error within his material function after following the tutorial below. [Link Removed] I followed the tutorial until I reached the point in which the e ...
"Diff Against Depo" Does not Display Changes to AI Controller Property
UE - Gameplay - Blueprint Editor - Mar 2, 2016When using Diff Against Depot to see changes made to a file since it was last checked in, changes made to the AI Controller default property are not displayed under the defaults section. Found in ...
Scroll Bar does not Stay "Anchored" to Bottom While Data Generates in Window
Tools - Jun 6, 2016The scrollbar no longer remains anchored to the bottom of the Output Log while more lines are propagated during the packaging process/ Regression: this does not occur in previous versions of the En ...
Cannot move instances of a hierarchical static mesh component in the blueprint editor viewport
UE - Gameplay - Components - Apr 12, 2016Can move individual mesh instances of a regular instanced mesh component in the blueprint editor, but not hierarchical ones. Originally reported as a pull request in [Link Removed], but we rejected ...
Collision Preset Cannot Be Changed On an Actor Containing a Scaled Root Component
UE - Gameplay - Jan 15, 2016In an actor that contains a scaled root component, it is not possible to change the collision presets on an instance of that actor if you are using the Viewport's Details panel. However, in the blue ...
Editor Performance drops when removing frames from animations with curve data
OLD - Anim - May 26, 2016Editor Performance drops when removing frames from animations with curve keys Regression: No, removing frames on animations with curves had a chance to crash the editor in 4.11, which doesn't happ ...
Mouse Not Being Locked to Viewport in PIE
Tools - May 3, 2016The mouse cursor is not being locked to the viewport during PIE in versions 4.11 and up. This is inconsistent with the behavior that was seen in 4.10 because the mouse was locked to the viewport du ...