https://mobile.twitter.com/xdaroj/status/1090319095134867459
https://mobile.twitter.com/xdaroj/status/1090319095134867459
https://www.browserling.com/browse/win/7/chrome/72/https%3A%...
Here's a screenshot of the headers by that Browserling instance type: https://imgur.com/a/Z7bGbpm
Does this issue affect normal Linux desktop-hosted locally-operated “the standard way” browsers?
I agree it likely won't be fixed anytime soon. It probably impacts single digit (or less) percentages of their users.
While there are many others, the site below [0] could have been used from the Browserline instance in question to deduce header information which would have included the OS as you've requested. Someone in Apple Support could likely figure this out given that information and ability to reproduce.