Things like -moz-border-radius do not work in the most recent versions of Firefox and some areas of the site still use the prefix. I miss my rounded corners. :p
Then it should support border-radius which is typically used in the same places. Can you point out exactly where these are, thanks!
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Pinging you so that you see the post above :)
Dexter by ❤
Thank you!
An example would be the reply/p2p buttons on the profile comments page. They have sharp corners in Firefox but no other browser so I just assumed this was the problem.
The HP bars in battle have this problem, though honestly I think I prefer the un-rounded version.

another is the bookmark buttons on the side
The username, password and login forms on the homepage (while logged out)
Pinging you for follow-up purposes, in case you missed the previous ones. :)
@ I know there has been a lot of updates to the pages specified in the examples, so I was wondering if you guys still noticed this issue. :)