Unreal Engine Issues
Unreal Engine Issues
Translucent Materials no longer reflect light when using Forward Lighting variable
UE - Graphics Features - Jun 7, 2016Translucent materials are no longer showing light reflections in scene when using r.forwardlighting 1 with lights. This is a regression from functionality in 4.11.2. This no longer works with 4.12 ...
Auto-weld is Enabled even if the blueprint component is set to Simulate
UE - Simulation - Physics - Jan 4, 2017Auto-weld is Enabled even if the blueprint component is set to Simulate. This only effects blueprint, static mesh actors in the world still disable Auto-weld if set to Simulate. This is a Regressio ...
Static Mesh Editor: Give options for drawing complex/simple collision
UE - Simulation - Physics - Mar 13, 2017The collision mesh and the display mesh are often similar enough to be difficult to differentiate, and there is currently no way to view the collision wireframe without the display wireframe as well ...
Using the HighRes Screenshot command in a shipping packaged build crashes the game
Tools - Oct 20, 2017Using the HighRes Screenshot command in a shipping packaged build crashes the game. This issue does not display a callstack or the crash reporter, simply a message that says fatal error then closes ...
HTML5 Black Screen When Launching on Chrome With Mobile HDR Disabled
UE - Platform - Mobile - Nov 2, 2017When launching the project with Mobile HDR disabled it launches with a black screen. This occurs in 4.16.3, 4.17.2, 4.18, and Main, from my testing. Launching with Mobile HDR enabled works fine exce ...
BuildId in the UE4Editor.version file for a local binary build will sometimes be updated when a hot reload is performed
UE - Foundation - Core - Feb 10, 2018Performing a hot reload on a project that is using a local binary build of the Engine will sometimes result in the Engine's UE4Editor.version file being updated with a new BuildId value. That result ...
Crash occurs in Hierarchical Instanced Static Mesh of Mesh with MinLOD set to 1 or higher
UE - Graphics Features - Oct 22, 2020I have attached a reproduction project with the above settings.[Link Removed] It crashes when packaged, launched and moved in-game. This issue seems to occur when there is an object in the Unbuilt ...
Scaled Geometry Collection made from non-basic Static Mesh Crashes Editor
UE - Runtime - Deformable - Nov 14, 2022Reproduced 3/3 times. So far tested with the Chair and Statue from the Blank Template Editor Default level. Error Reads as follows:Assertion failed: IsValid() [File:D:\build\++UE5\Sync\Engine\Source ...
'GetClassDefaults' Can Cause Blueprint To Become Modified When Unrelated Blueprint Is Compiled
UE - Framework - Blueprint - Sep 22, 2023The stems from a really old change (CL 2948683) to fix [Link Removed] Closed . Compiling ObjectA will call RefreshExternalB ...
Bundled compute PSO compilation stalling tender thread
UE - Rendering - RHI - Feb 13, 2025A licensee has pointed out a potential bug they found related task graph synchronization and when compiling compute PSOs: [Link Removed]. From the screenshot they sent over, it seems that a task gra ...