1. Make Firefox lose focus to another application.
2. Hover over a bookmarks toolbar item
Result: hover effect (indicating click-through)
Result: nothing happens
Expected: open a in a new tab, and maybe focus the window
Related to bug 460782?
This is one of the cases mentioned in bug 581876.
there is also bug 562998 that could be related
The patch in bug 562998 fixes this for me, but it doesn't fix bug 460782.
Looks like bug 562998 fixed this.