Unreal Engine Issues

CheckLightmapUVs Not Registering Overlapping Lightmap UVs

CheckLightMapUVs is not registering overlapping Lightmap UVs when it is called. User Quote: "I have been working on an editor tool to diagnose some general asset problems and I noticed that in USt ...

r.MipMapLODBias has no effect on Texture Sample using Shared:Wrap or Shared:Clamp

If a material contains a Texture Sample node with Sampler Source set to Shared:Wrap or Shared:Clamp, setting r.MipMapLODBias will have no effect on the blurriness of the material. Regression: No - ...

Function output nodes containing an array will cause packaging to fail when nativizing blueprints

If a blueprint contains a function with an array output and the project is being nativized, the package will fail with an error similar to "error C2679: binary '=': no operator found which takes a r ...

Event tick not firing when in an actor component that is added to an actor

When using actor components, if you delete a node, such as event tick and then add it to an actor, even if you modify the component again, such as adding the event tick event back, the component wil ...

VS fails to compile when USTRUCT is referenced as BlueprintReadWrite or BlueprintReadOnly

Defining a FBoneReference variable as BlueprintReadWrite or BlueprintReadOnly in the UPROPERTY macro fails to compile in 4.17. The error message provided by VS states: LogCompile: Error: Type 'FT ...

Cut/Copy doesn't work on Linux when using the right-click menu

Trying to cut or copy text / references using the options from the right click menu does not actually copy the selection to the clipboard. The right click menu will show the Paste option grayed out ...

Crash upgrading a UMG project

Color and Opacity animation option does not play for Button component

Color and Opacity animation option does not play for Button component, this occurs both in the Widget editor and during play. This issue is not a regression Versions Tested: 4.16.3 - CL: 3561208 - ...

Physics Handle - Angular Damping option has an incorrect tooltip

there is a wrong tooltip for Angular Damping option in the details panel for the Physics Handle, the tooltip describes it as Angular Stiffness. This issue is not a regression Versions Tested: 4.15. ...

Visual flicker occurs with object during play

There is an issue occurring where objects are flickering, and what appears to be jittering at set distances when rendering, increasing the bounds of the mesh pushes the distance for the issue out. T ...