Collision Material is visible on import in Unreal 5.5.4 ? Not happen in 5.3.2 or 5.4.4

Hey everyone,

I ran into a weird issue when importing a mesh with UCX collision. To test it, I made a super simple box in 3ds Max with a UCX collision mesh.

When I import the .fbx into Unreal 5.5.4, the **collision material appears with the box’s material **. But if I just hit Reimport Mesh, the collision material disappears like it should.

I tried the same .fbx in 5.3.2 and 5.4.4, and didn’t see this problem there — seems like it’s only happening in 5.5.4.

Has anyone else seen this?
Do you have a better fix than manually clicking Reimport Mesh?
It works for now, but I can’t rely on that for every mesh that’ll be added later in the project.

Thanks in advance! :folded_hands:



Hello, it is in our ticketing system, current ETA is 5.7

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Thanks for confirming it will be fixed in UE 5.7, much appreciated.