Unreal Engine Issues
Unreal Engine Issues
User Defined Enums don't support the UseEnumValuesAsMaskValuesInEditor meta specifier
UE - Framework - Blueprint - Sep 13, 2023The Make Bitmask node uses the flag index rather than the flag mask value unless the enum has the UseEnumValuesAsMaskValuesInEditor meta specifier. UserDefinedEnums in the editor don't support this ...
K2Node_GetEnumeratorName doesn't support bitmasks
UE - Framework - Blueprint Compiler - Jan 29, 2025This is almost identical to [Link Removed]. The difference is that we need a variant of UEnum::GetNameByValue that supports bitmasks. We'll likely have to run this by Core. ...
Sphere Mask ArgInvHardness missing multiplication
UE - Rendering Architecture - Materials - Jun 27, 2025Hi Epic, In MaterialExpressions.cpp UMaterialExpressionSphereMask::Compile(), hardness is not calculated the same way in both <if> conditions. One is missing a multiplication by 0.01f. Specificall ...
MRQ - No Rayrtaced Shadows casted from Groom Caches with only 1 Spatial Sample
UE - Graphics Features - May 28, 2025A groom cache will not cast a raytraced shadow with only 1 spatial sample. It does not matter how many temporal samples you have. ...
Long load time for files with large numbers of trees in 2025.2
TM - Core - Oct 6, 2025Reported in SF [Link Removed] User reports that multiple files with large amounts of trees take substantially longer to load in TM 2025.2 compared to 2025.1.1. Confirmed with one of the user's fil ...
SourceControl: Error: Operation 'UpdateChangelistsStatus' not supported by source control provider 'Subversion'
UE - Editor - Workflow Systems - Apr 15, 2021When trying to check in a new asset or changed asset via the source control menu or Tools menu, an error comes up in output log. SourceControl: Error: Operation 'UpdateChangelistsStatus' not suppor ...
Add ThinLTO support to iOS
UE - Platform - Apple - Jun 27, 2023iOS link times could be sped up by adding ThinLTO support as was done for Android recently. ...
Property Coloration isn't supported for Nanite
UE - Graphics Features - Nanite - Sep 11, 2023Property Coloration View Mode is not supported by Nanite. (Left cube is Nanite and isn't affected by the Property Coloration view mode) [Image Removed] ...
FCollisionProfileNameCustomization doesn't support Multiple Values
UE - Editor - Applied Usability - Aug 16, 2023The class FcollisionProfileNameCustomization customizes the property editor for the class FcollisionProfileName. However, it does not handle the case where multiple assets/actors are being edited si ...
GPU Lightmass does not support bounce lighting from landscapes
UE - Graphics Features - Jun 29, 2024GPU Lightmass does not support bounce lighting from landscapes, but CPU Lightmass does. ...