Unreal Engine Issues
Unreal Engine Issues
VisionOS deferred renderer regression
UE - Platform - XR - Sep 11, 2024Deferred desktop renderer does not function correctly on visionOS. It did work in 5.4. One problem is the r.XRMSAAMode setting forcing 4 samples even when not using msaa, but there are other probl ...
Diffing blueprints in Perforce changelist reviewer incorrectly displays blueprints that reference assets not in local filesystem
UE - Framework - Blueprint - Nov 22, 2024When diffing a blueprint in the Perforce changelist reviewer in-editor (Review Changelists), if the blueprint references an asset that does not exist locally but rather exists as a newly added asset ...
Static Meshes that are reimported with less materials can lead to map check errors on instances that had overriden materials that require manual cleanup
UE - Rendering Architecture - Feb 5, 2025StaticMeshActors placed in the world can override the default materials of a static mesh. If the static mesh is then reimported with less materials, the actors maintain references to unused material ...
Editor crash after reverting a Blueprint asset in source control
UE - Framework - Blueprint Compiler - Feb 26, 2025Added context from dev support ticket:The crash occurs because FDelegateProperty::Serialize accesses a dangling SignatureFunction pointer. Given that its derefencing dangling pointers the specifi ...
OFPA Localizable Text Instances are not gathered when world partitioning is disabled
UE - World Creation - Worldbuilding Tools - OFPA - Mar 7, 2025Context One File Per Actor (OFPA) reduces overlap between users by saving data for instances of Actors in external files, removing the need to save the main Level file when making changes to its Act ...
Option "Use Mouse for Touch" does not work correctly when running the game in "Standalone" or "New Editor Window (PIE)" modes: Virtual joystick does not appear and mouse cursor is incorrectly hidden while captured.
UE - Gameplay - Input - Apr 1, 2025The Editor provides option "Project Settings – Engine – Input – Mouse Properties – Advanced – Use Mouse for Touch" to allow testing virtual joysticks and other touch controls with the mouse. When ru ...
GeometryScript: BlueprintCallable GetMaxMaterialID return pin is incorrectly named "Enabled" instead of "MaxID"
UE - Graphics Tools - Modeling Tools - GeometryScripting - May 2, 2025The return pin for the "Get Max Material ID" function is incorrectly named "Enabled" when the function returns the MaxID. See \Engine\Plugins\Runtime\GeometryScripting\Source\GeometryScriptingCore\ ...
Illegal reference to private object when cooking a child level sequence with a time warp track
UE - Anim - Sequencer - Apr 28, 2025Slack: [Link Removed] Cook error: UATHelper: Cooking (Windows): LogSavePackage: Warning: UATHelper: Cooking (Windows): Referencers of MovieSceneTimeWarpSection /Game/ChildSequence.ChildSequence: ...
When importing static mesh using interchange and collision is generated, the asset does not have Collision Generated set to true
UE - Editor - Content Pipeline - Import and Export - May 19, 2025Context: The Interchange Framework is Unreal Engine's import and export framework. When importing a mesh without collision, collision can be auto-generated. Problem: The problem is when importing s ...
Duplicated PCG Component instance resets overridden parameters to default
UE - World Creation - Procedural Tools - PCG Component - Jun 4, 2025Context: Similar to parameters in the Material editor, PCG Graph Parameters are user created overridable values and can help create customizable graphs for a variety of situations. Problem: The l ...