Comment 4 for bug 917753

At a high level view, it is still a bug. Activity on other tabs should not affect a tab. Presenting a menu from ouse action that cannot be navigated by that mouse is just cruel and silly.

I suppose that in place of displaying a menu you cannot navigate, it could context-switch you to the windowand tab with an open dialog. However, you may be seeking an answer in this current tab to the question in the first dialog, so then your only workaround would be to have many brands of browser open, which is more sad.