Unreal Engine Issues
Unreal Engine Issues
"Allow Sequencer Edits Only" and Control Rig performance impact
UE - Anim - Sequencer - Mar 27, 2026We noticed an issue working in sequencer with "Allow Seqeuncer Edits Only" and control rigs. Performance will drop when manipulating using the AnimDetails channel sliders. ...
USD Export - crashes when sub level holds level instance
UE - Editor - Content Pipeline - USD - Mar 27, 2026The engine is crashing when the user tries to export from a persistent level with a sub level that contains a level instance. ...
Level Sequence SpotLight USD Exporter Bug
UE - Editor - Content Pipeline - USD - Mar 26, 2026The attributes for spotlights are not exported. ...
Renamed controls creating duplicate curves in sequencer that once fixed up cause selection issues.
UE - Anim - Rigging - Control Rig - Mar 25, 2026When a control is renamed after it has already been animated in a sequence, the control curve name map needs to be fixed up. Once it is fixed, selecting the control in the world will not map the sel ...
Dynamic Translucency Resolution Not Reported Correctly
UE - Rendering - Architecture - Mar 24, 2026The dynamic translucency resolution and other dynamic resolution values were tied to the primary dynamic resolution and never updated for each type of dynamic resolution. The scaling resolution fra ...
Virtual Texture does not stream high-resolution data when assigned as a UI material to a widget.
UE - Rendering - Architecture - Mar 23, 2026When a Virtual Texture is applied as a UI material, there is no associated geometry, so it does not explicitly request the loading of high-res virtual texture tiles. ...
SetBlendState has HDR UI override baked in
UE - Rendering - Architecture - Mar 20, 2026SetBlendState() is called from non-UI code but has HDR UI overrides baked in. The UI specific code should be moved to the UI code that calls SetBlendState() - likely in FCanvas, or the function sho ...
DynamicWind doesn't unregister proxy and leaks
UE - Rendering - Architecture - Mar 20, 2026FSkinnedSceneProxy's never get unregistered from the DynamicWind system In FDynamicWindTransformProvider::UnregisterSceneProxy, there's an early out that says: if (SkinningSceneExtProxy == nullptr ...
Chooser with Gameplay tag as output causes Evaluate Choose to not compile.
UE - Anim - Gameplay - Mar 20, 2026When using a No Primary Result Chooser that contains an FGameplayTag parameter, an Evaluate Chooser node using that chooser will cause a compilation error: LogBlueprint: Error: [AssetLog][PathToPro ...
Camera tangent inversion on FBX Import when "Force Front XAxis" is enabled
UE - Anim - Sequencer - Mar 19, 2026When importing camera animation FBX files into Sequencer, enabling the "Force Front XAxis" option causes the key tangents for Rotation-Pitch (Y) to be inverted. This results in broken animation curv ...