Unreal Engine Issues
Unreal Engine Issues
REGRESSION: HierarchicalInstancedStaticMeshComponent LOD transitions are broken in 4.9 and Main
UE - Graphics Features - Aug 24, 2015While testing another fix I noticed HISM LOD transitions are not working in Main or 4.9 branch. There is no screen-door effect and multiple LODs seem to be rendering simultaneously compared to 4.8. ...
UnrealBuildTool fails to build generate project files or build if the project is stored on a non-HFS partition
UE - Foundation - Cpp Tools - UnrealBuildTool - Mar 29, 2016When a user attempts to compile a project that is stored on a non-HFS partition on OSX, UBT fails to build due to files that are being generated that start with ".". The user's proposed fix is to ha ...
FixupRedirects commandlet does not auto-commit deletions
Tools - Jun 15, 2016See this UDN: https://udn.unrealengine.com/questions/297811/fixupredirects-commandlet-submitting-marked-for-de.html The fix looks straightforward, just a one-line change but could benefit from tes ...
MatineeFightScene too dark due to tonemapperfilm changes
Docs - Samples - Jan 31, 2017MatineeFightScene is heavily dependent on the old Film settings in the tonemapper. Since 4.15 made changes to this, the scene is extremely dark. The project needs r.TonemapperFilm=0 added so that i ...
CrowdManager never calls StartUsingCustomLink() on Agents when Custom NavLinks are Placed in the Level and Traversed
UE - AI - Mar 20, 2017StartUsingCustomLink() never gets called in the CrowdManager when an AI with a UCrowdFollowingComponent begins to traverse a NavLinkProxy that has been placed in the world. The link UserID always r ...
Can not change source paths on Datasmith Scenes
OLD - Enterprise - Aug 20, 2018You are unable to change the filepath for Datasmith Scenes. The '...' box is there for you to select but it does nothing when clicked. This issue happens in both 4.19.2 (0.182) and 4.20.1 (4.20E2) ...
Crash when setting Anim to "None" with URO
OLD - Anim - Aug 28, 2019A Crash can occur when setting a skeletal mesh's animation instance to None when it has Update Rate Optimizations enabled. An unverified proposed fix for this is to remove the nullptr check when ...
WrapBox->ForceNewLine() does not keep the slot on a new line.
UE - Editor - UI Systems - Slate - Apr 18, 2022Repro Ratio: 4/4 Regression testing done in //UE5/Release-5.0-EarlyAccess CL-16682836 as this is a new feature to UE5. This issue Also happened in Early Access 2. ...
Nanite meshes' selection outline is off with temporal upsampling
UE - Graphics Features - Nanite - Feb 2, 2021Non nanite mesh have an outline that match lit geometry, but not nanite meshes. The plan is to enable temporal upsampling by default in 5.0, so this issue will become problematic [Link Removed ...
Sky Lights don't effect Translucent materials
UE - Rendering Architecture - Materials - Nov 21, 2022Regression: Tested in UE5/Release-5.0, this issue does not occur so it is a regression Appears to be an issue with Lumen and Skylights with Cubemaps. Directional lights, point lights, etc. all work ...