problem: GLB files are not in the accepted extensions for bug reports. These will be useful for reproducing cases while after effects 3d imports is in beta. please add the extension to the support site.
Thanks for calling this out. Since it isn't a bug in After Effects, I've moved it to the Discussions section of the Beta forum. You make a great point and I'll be asking our forum team if .glb can be added to the allowed formats list.
- John, After Effects Engineering Team