USDZ export materials not working in Apple Vision Pro 27b2

Latest MacOS, iPadOS, Shapr on both platforms.
Apple Vision Pro 27 beta 2

USDZ exports from shapr do not show materials when opened in quick look on the Apple Vision Pro running 27 beta 2. The USDZ does show materials on the iPad and Mac in quick look/preview so one would think this is an issue with the AVP 27 beta 2. However, other USDZ files do show materials. So far it’s only the ones exported from Shapr (previous versions and latest version) that do not display the materials. Geometry and colors are fine.

I also tried opening a few shapr usdz exports in Reality Composer Pro, saving to USDZ and viewing in AVP with the same issue.

Is there something odd about the way USDZ files are created by Shapr that would cause this?

Eventually I will check an AVP 26.x to see if there’s an issue. I won’t be able to check quick look on MacOS and IPadOS 27 betas.