STL thumbnails went away with the latest Mac OS update

[MalcTheOracle]

Mine are fine on the Mac, it is likely some other app hijacking the format.

@Rmedias

but certainly not on 3mf files.

See my other comment here for 3mf thumbnails on the Mac.

Thumbnail for 3mf files on Mac OS

Yes. Download the latest built file that gives thumbnail previews for your 3mf files. BTW, this isn’t just a problem with BS, CUra and Prusa also have the issue. If you are so inclined, this is the source code to compile it yourself.