Unreal Engine Issues
Unreal Engine Issues
Outline artefact on cascade shadow transition
UE - Graphics Features - Mar 28, 2024Some pixels at the edge between cascaded shadow maps and distance field shadows can be skipped by both, leading to unshadowed pixels. Licensee reports the bug happening in 5.3 as well. Test project ...
'Platform Stats' incorrectly display the number of Texture Calls for a material
UE - Rendering Architecture - Materials - Jul 29, 2024When the DBuffer is disabled in the project settings, the Material Editor Stat page will still display the estimated texture lookups for the DBuffer. It appears that the code that adds these estimat ...
A corrupted Twinmotion file is created when there is not enough space on disk
TM - Core - Nov 8, 2024Nanite TwoSidedSign is backwards
UE - Graphics Features - Nanite - Apr 10, 2025The value of MaterialExpressionTwoSidedSign is flipped when calculating the Opacity Mask for Nanite meshes. This seems to be a regression in 5.5. ...
Texture reprojection from one plane to another produces displacement map with a pattern
RC - Texturing - Mar 4, 2025Found in 1.5.1.118081 Project: [Link Removed] Message from customer: "The problem occurs when using the texture reprojection tool on a surface scan to bake model details onto a simple bake plane ...
URuntimeVirtualTextureComponent::RequestPreload not working for some edge cases
UE - Rendering Architecture - Jul 15, 2025A licensee has reached out to us to inform us that the logic for preloading at times fails to account for adaptive virtual textures when the requested mip level is not in the shared AllocatedVirtual ...
Replication default setting of child blueprint resets if parent is compiled
UE - Gameplay - Blueprint - Jul 20, 2015The setting for Replication on a Blueprint variable resets to None of the Blueprint's parent BP is compiled. ...
Changing UPROPERTY() settings causes detail components to vanish in editor
Tools - Mar 11, 2015When a UPROPERTY() macro is changed and the recompiled, the hot reload in the editor will cause any BP based on the class to lose certain aspects of the Detail panel such as the actor's transform. ...
Static mesh loses static mesh reference when Alt-dragged in viewport if filepath contains []
Tools - Sep 3, 2015Static meshes lose their static mesh reference when alt-dragged in viewport. This only occurs if the mesh is located in a filepath containing square brackets ( [] ) within the filepath name. Additio ...
Changing between multiple Streams that are contained within an array does not work
UE - Gameplay - Blueprint - Mar 20, 2015Changing between multiple Streams that are contained within an array does not work. ...