I missed 2 things when I reviewed the patch in bug 581382 1) We need "text-shadow: none;" for the box-texttab on mac 2) .sidebarheader-main has "-moz-appearance: toolbar;". This means that the border styles are not applied. With personas we set "moz-appearance: none;" - that means that borders are applied and the box increase in size (moves). This can be seen when previewing personas.
Created attachment 478590 [details] [diff] [review] fix remaining issues on mac
- border: 1px outset InactiveCaption; Just to clarify: this border style doesn't make sense when you have a -moz-appearance rule, so we can just get rid of of it. Even if we didn't had any -moz-appearance rule it shouldn't be there imo since it would look bad.
Comment on attachment 478590 [details] [diff] [review] fix remaining issues on mac I'll steal that as I just believe you on that border and the other hunk is already agreed anyhow ;-)