Unreal Engine Issues
Unreal Engine Issues
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 Architecture - 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 - Editor - UI Systems - 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 - Workflow Systems - 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 - World Creation - Worldbuilding Tools - Level Instances - Dec 4, 2025When Saving the level, ULevelInstancePropertyOverrideAsset::SerializeActorPropertyOverrides will run UStruct::SerializeTaggedProperties to "diff-serialize" each object against its archetype (the LI ...
Crash on 5.7 when running with the Vulkan RHI and async compute
UE - Rendering Architecture - RHI - Dec 4, 2025Making this a placeholder for now. Will fill out the description asap ...
Issue with Niagara emitter inheritance
UE - Niagara - Dec 4, 2025Modules in the particle spawn stage get unlocked and lose inheritance after changing the inherited emitter's interpolated spawn mode to "No Interpolation" then resetting. ...
Morph target is not applied on the first frame in Level Sequence
UE - Anim - Rigging - Dec 4, 2025When a skeletal mesh with morph targets spawns in the sequence, the morph is not reflected in the first frame. In the ProcessStage_SkinCache call of SkeletalMesh, MorphVertexBuffer->SectionIds is ...
Mover plugin: Crash on UFloorQueryUtils::ComputeFloorDist() and other utility functions that assume the pawn uses a UCapsuleComponent
UE - Gameplay - Player Movement - Mover - Dec 4, 2025The following functions have been found to perform unchecked casts of the pawn's "UpdatedComponent" to class UCapsuleComponent, possibly resulting in crashes:UFloorQueryUtils::ComputeFloorDist()UGro ...