Description of problem: I do something in Firefox, I switch to another application and start doing something else and then all of a sudden I'm back in Firefox. Very annoying, especially if other application had a password prompt and now half my password is in a text in Firefox! Version-Release number of selected component (if applicable): version 3.5.2 release 0.2.fc5 How reproducible: Totally. The example below uses gmail but the behaviour is not limited to gmail, that was just the easiest way to consistently repro. Steps to Reproduce: Step 3 is a little tricky. If you computer or net connection is too fast it might be difficult to do it quickly enough. 1 log in to gmail 2 click "compose mail" 3 click "discard" and immediately hit Ctrl-Tab to switch to a different desktop 4 wait 5 marvel at the fact that you are back on the Firefox desktop again Additional info: Gnome's WM doesn't seem to suffer from this. Also FF doesn't steal focus if you Alt-Tab to another window on the same desktop. I though maybe Ctrl-Tab is somehow leaving FF still with the focus even though it's not on the current desktop but a quick experiment shows that even if I click on something on the new desktop to ensure focus is no longer with FF, it still manages to steal it back.
This turned out to be a new default setting in KDE - let firefox (and a handful of other apps) steal focus. Why that seemed like a good idea for a default setting, I have no idea.