Unreal Engine Issues
Unreal Engine Issues
Replicated timeline may not call Finished event on client
UE - Framework - Networking - Dec 9, 2025It seems this can happen if the timeline component on the client receives an update from the server for the final position of the timeline, causing it to be set as no longer playing before it has a ...
Convex hull generation fails when first 3 verts are colinear
UE - Runtime - Simulation - Dec 9, 2025The licensee identified a number of cases where loading assets will trigger convex hull generation warnings:If the first 3 verts in the set are colinear (in which case IsPlanarShape() returns true b ...
Virtual texture thumbnails appears brighter (incorrect sRGB/gamma) in content browser after asset is loaded
UE - Editor - Dec 9, 2025This is a regression, it worked correctly up to UE 5.5 but behaves incorrectly in UE 5.6 up to latest. When a regular texture with sRGB enabled is converted to a virtual texture, its thumbnail in t ...
Provided example Control Rig Python scripts that feature calls to GetControlRigBlueprint need to be updated to GetControlRigAssetInterface.
UE - ACT Character - Control Rig - Dec 9, 2025The unreal.ControlRigContextMenuContext.get_control_rig_blueprint() this function has been deprecated in Unreal Engine 5.7. As a result, the Python scripts included with the Control Rig plugin no ...
Material Type Toggle Reverts when changing selection
TM - Tools - Dec 8, 2025Expected Behavior * The Thin material type selection should persist across selection changes.Material state should remain stable and consistently reflect the user’s last saved or applied settings.Sw ...
Gameplay Tags sourced from a Composite Data Table do not reflect changes made to its parent tables
UE - Gameplay - Gameplay Tags - Dec 5, 2025When a Composite Data Table is included in the "Gameplay Tag Table List" on the Project Settings, making and saving changes to one of its Parent Tables does not cause the Gameplay Tag Tree to refres ...
Texture Streaming can randomly streams in all Mips, causing large memory spikes
UE - Rendering - RHI - Dec 5, 2025A possible race condition allows texture instance views to read uninitialized bounds, causing either garbage or zero screen size values to be returned by FRenderAssetInstanceAsyncView::GetRenderAsse ...
Drag and Drop fails in Standalone and Packaged builds when WidgetComponent’s Widget is set at runtime
UE - AI Workflows - UI Systems - UMG - Dec 4, 2025When a UWidgetComponent has its widget assigned dynamically at runtime using CreateWidget and SetWidget, drag & drop operations fail in Standalone Game and packaged/game builds, while working correc ...
Custom thumbnails don't get updated until the asset is saved
UE - Editor - Verse Class Editor - Dec 4, 2025This is a regression, here's the repro in FN/Main (48954958) : [Link Removed] And now in UE5.7 (48496583) : [Link Removed] ...
LI Property Override: LI internal references are broken when saving the overrides.
UE - Engine Scaling - Streaming - Level Instances - Dec 4, 2025When Saving the level, ULevelInstancePropertyOverrideAsset::SerializeActorPropertyOverrides will run UStruct::SerializeTaggedProperties to "diff-serialize" each object against its archetype (the LI ...