Weird column wrapping on Windows11 (edge & chrome)

Anyone else encountered this with an Atomik theme, on ConcreteCMS v9.4.5 - getting this column wrapping on Windows11. Both for Chrome and Edge.

On my Windows10 system it looks as it should.

When I upgraded my windows 11 wamp server dev site from 9.4.4 to 9.4.5 I had some weird layout displays that were obviously css related.
My resolution was to delete the application/files/cache folder and refresh the chrome browser to rebuild the deleted cache folder.
Problem solved as all displays were corrected.

For some reason, the ‘box-sizing’ wasn’t loading correctly. It wasn’t a problem with OS, just a logged in/logged out thing.

I inserted this from ‘ccm.css’ into my theme CSS and it fixed the issue.

*,:after,:before {
box-sizing: border-box;
}