Unreal Engine Issues
Unreal Engine Issues
"Corrupted" .TM file is created on disk when user is missing space
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 ...
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 ...
Interface cannot be re-implemented after removal from blueprint
UE - Gameplay - Blueprint - Sep 1, 2015If an interface is removed from a blueprint and an interface function is transferred to a local function, the interface cannot be re-implemented in the blueprint. ...
nonstandard bsp additive brushes cause breaking/artifacting on other bsp brushes when colliding
UE - LD & Modeling - Modeling Tools - BSP - May 14, 2015if a nonstandard additive bsp brush collides with a standard additive bsp brush, the surfaces of the bsps break and artifact, causing numerous holes in the brushes. ...
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. ...
UMG widgets aren't cleared when levels are swapped via 'open LevelName'.
UE - Editor - UI Systems - Oct 30, 2014If a level has UMG widgets, swapping to other levels (including the level you're already on) doesn't clear away the UMG widgets. ...