I think these are all fixable in one go, so, noting here: - the separator is off by 1px compared to where the hover border starts - the active style for the dropmarker doesn't show the hover style for the star part of the button (not tested the reverse, but that should obviously also work) - on hover/active, the dropmarker part is noticeably bigger than the star part

I'll add one more issue to this list :) There is a white shadow at the bottom of the hovered part of the item. This shadow should always extend over the entire width of the combined element.

Putting this up here to show the progress, while working on getting bug 980374 landed without test failures.

Comment on attachment 8389845 [details] [diff] [review] Patch v1: adjust Bookmarks button border state on hover and panel open Review of attachment 8389845 [details] [diff] [review]: ----------------------------------------------------------------- Yes, this is much better! Good stuff!

Thanks! Pushed to fx-team as: https://hg.mozilla.org/integration/fx-team/rev/e41244dad384

Comment on attachment 8389845 [details] [diff] [review] Patch v1: adjust Bookmarks button border state on hover and panel open [Approval Request Comment] Bug caused by (feature/regressing bug #): bug 909349 User impact if declined: Bookmarks star button and dropmarker will have the wrong hover states without this patch applied. Testing completed (on m-c, etc.): landed on m-c Risk to taking this patch (and alternatives if risky): minor String or IDL/UUID changes made by this patch: n/a

Pushed to Aurora: https://hg.mozilla.org/releases/mozilla-aurora/rev/7213d1399587