USplineComponent still editable in viewport despite setting as "read-only".

UE - Framework - Blueprint Editor - Apr 29, 2024

A spline component continues to be visible and editable in-editor despite all attempts to disable the functionality through the component's settings or uproperty specifiers. ...

UI Flickers in Packaged Movie Render Queue builds

UE - Anim - Sequencer - MRQ - Jul 26, 2024

Error when exporting large model to FBX binary

RC - Editor - Sep 16, 2024

It's happening when exported models have over 150 million triangles. Project: [Link Removed]  Note: Reported in the Elite Slack channel. ...

Problems with shadows on transluscent materials

UE - Rendering - Architecture - Sep 24, 2024

Shadows on the surface of SingleLayerWater are heavily pixelated, and don't appear to use bilinear filtering at all. Also tested on //UE5/Release-5.5, CL: 36481335 ...

Issues with global invalidation (MoviePlayer)

UE - Editor - UI Systems - Sep 27, 2024

It was mentioned that the global invalidation should be toggled off during loading screen and subsequently restore the state after. A request was made for this dynamic behavior be part of the engin ...

Some features have not yet been supported when using AmbientCubemap as IBL

UE - Graphics Features - Mar 26, 2025

Translucent materials do not receive specular highlights and reflections from Ambient Cubemaps set in Post-Process settings. There is a pass"InjectTranslucencyLightingVolumeAmbientCubemap" that sho ...

Automated tests DynamicSubobjectInstancing and NonNativeInstancedSubobjects (CoreUObject group) fail

UE - Framework - Dec 15, 2025

The DynamicSubobjectInstancing and NonNativeInstancedSubobjects automation tests fail. ...

Console window is locked when casting to the player controller

UE - Editor - UI Systems - Jul 13, 2015

User has reported that access to the console window is locked when using this setup. ...

Wind affects cloth in scene when there is no Wind Directional Source actor placed

UE - Simulation - Physics - Character - Jun 22, 2015

If a character with a cloth simulation or a mesh with a cloth simulation is in the scene there is wind force that is being applied to the cloth. The only way to remove this is by setting a Wind Dire ...

Reset Emitter button in blueprint emitter component has no effect

UE - Gameplay - Blueprint - May 21, 2015

After setting a particle system component inside blueprint, clicking the "Reset Emitter" button in the details panel does not have any effect on the particle system. ...