Unreal Engine Issues
Unreal Engine Issues
Mirror operation on Physics Asset produces wrong results for constraints, including flipped axes
UE - Runtime - Simulation - Feb 7, 2025The Physics Asset Editor has a "mirror" feature that allows physics bodies and constraints to be mirrored from one side of a skeleton to the other. If this operation worked correctly, it could save ...
Merge Actors (Simplify) is broken with Substrate Shader Models Node
UE - Rendering - Features - Shading Models - Sep 29, 2025Substrate Materials cannot be baked when Meshes are merged using the "Simplify" method. All textures except for the normal are reduced to a single black parameter. The normal texture produced does n ...
Actor Components incorrectly appearing mixed with the Scene Component Hierarchy in the Component Tab of the Blueprint Editor
UE - Framework - Blueprint Editor - Dec 19, 2025This is a regression introduced by CL 45871568 in ue5-main branch. The new function FFBlueprintEditorDefaultSortUICustomization::SortSubobjectData() in file "BlueprintEditorSCSEditorUICustomization. ...
Niagara: MeshParameterBinding property of the StaticMeshLocation module does not accept binding to parameters of type StaticMesh.
UE - Niagara - Jan 22, 2026On the details panel of the StaticMeshLocation module, when expanding the dropdown of the MeshParameterBinding property, user parameters of type StaticMesh don't show up (only those of type "Object" ...
Auto Convex collision generation doesn't work in some instances the accuracy setting
UE - Gameplay - Jun 18, 2015The new auto-convex collision generated (V-HACD) will not work properly with some meshes to generate accurate collision. Using a rounded single piece mesh the accuracy setting will not work at all ...
Reset Instance Changes to Blueprint Default does not revert changes made to instances
UE - Gameplay - Blueprint - Sep 15, 2015creating an instance of a blueprint and making changes to the instance will not respect "Reset Instance Changes to Blueprint Default" when pressed from Details Pane. ...
Game instance spawning object crashes .exe in packaged project
UE - Gameplay - Blueprint - Mar 19, 2015If an actor is spawned using game instance blueprint, a packaged .exe will crash upon loading. Frequency: 2/2 Crash Reporter: [Link Removed] ...
Crash Occurs When Clicking Off of Color Picker in Data Table
Tools - Jun 29, 2016When using an FLinearColor variable in a data table and editing it using the color picker, clicking anywhere off of the color picker window will cause the editor to crash. Error Message: Assertio ...
Interface function has the incorrect pin type if referencing self
UE - Gameplay - Blueprint - Sep 1, 2015Interface function has the incorrect pin type if referencing self User Description: I have an interface that requires an array of its own interfaces as output. I have that array of interface as a ...
Camera is flipped when keying from negative to positive Crane Pitch
UE - Anim - Sequencer - Aug 19, 2016Camera is flipped when keying from negative to positive Crane Pitch ...