User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_2) AppleWebKit/537.31 (KHTML, like Gecko) Chrome/26.0.1410.5 Safari/537.31 Steps to reproduce: 1. Open Firefox (Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:21.0) Gecko/20130216 Firefox/21.0) 2. Enter any URL Actual results: Height of address bar changed. Expected results: Height of adress bar shouldn't have changed, i.e., it should always have remained the same.

- Bookmarks toolbar configuration: 'Use Small Icons' - MacBook Pro Retina display

Do you know if it's a regression? If yes, could you use http://harthur.github.com/mozregression/ to find a regression range, please.

I don't know if it's a regression. The issue has been reproducible for some time. I would link it so the implementation of basic Retina-readiness for Firefox. In version where the startup screen is about:, changing about: to another URL results in a similar height change.

I wasn't able to reproduce this. Maybe it is related to bug 826603, https://bugzilla.mozilla.org/show_bug.cgi?id=826603 .

I was not able to reproduce bug. URL bar stayed in same location.

I was not able to reproduce bug. URL bar stayed in same location.

(In reply to Liz Henry :lizzard from comment #4) > I wasn't able to reproduce this. Maybe it is related to bug 826603, > https://bugzilla.mozilla.org/show_bug.cgi?id=826603 . I believe it is a duplicate. Reproduces for me on a 15" Retina MBP.