Yes, for example Safari and Terminal have different radiuses. Most of the 1st party apps seem to be the same as Safari, so I guess Terminal didn't fully get "glassed".

> Are the Apple-owned app windows inconsistent too? I see some inconsistencies but it's generally 3rd party apps mixed with Apple's apps.

Does it matter if it's 3rd party apps or not? Wasn't a huge part of the sell with Apple's own GUI toolkits that all native apps work uniquely, but look familiar and like part of one and the same? The consistency and "all apps look and work great" I seem to recall being one of the "features" people used to tout about OSX.

FWIW; TFA compares the border radius of TextEdit and Calculator, both two Apple apps, built-in nonetheless.

Yes, I noticed this shortly after the update. I forget the specifics, but Apple first party apps definitely have this issue.

Some do, yes.