UE 5.3.0 Hidden bone causes strange graphical issues, glowing circles on mesh.

General Issues and Bug Reporting
1

Please select what you are reporting on:

Creative

What Type of Bug are you experiencing?

Character

Summary

Hello,

We upgraded from UE 5.1.1 to 5.3.0 this week. Everything went well, except for one small issue we’ve noticed that is easy to reproduce in our project.

Whenever a bone is hidden (for example through the BP node to hide bone by name), the bone will hide but at the point where the bone resizes a blinding white sphere is generated. This sphere seems to actually be generating light as well, so it’s possible whatever material is behind it is emissive.

It happens when hiding any bone on a skeletal mesh. Reproduces 100% of the time in our project. We did not other code changes except the actual engine upgrade from 5.1.1 to 5.3.0, so this was not happening in the prior version.

Any help is appreciated.

Thanks!

Steps to Reproduce

Use the Hide Bone By Name node on a skeletal mesh. The bone will hide and a white sphere appears where the bone was.

Expected Result

The bone is hidden but a white sphere does not render.

Observed Result

You’ll see the white sphere spawn at the site of the bone.

Platform(s)

All

2

tried to double side my material hoping that would fix it but no luck

3

Hi there any luck with this experiencing same issues , i think that it might be due to the mesh being empty inside and the node creating mesh to cover the inside of the mesh. and that the material used for this is indeed very bright and emissive.
any help would be appreciated