While working on bug 1221992, we discovered some edges cases that are probably not being handled correctly at the moment with openWindow and focus. We should investigate: Scenario 1: 1. private browsing window in the foreground and focused 2. user clicks a notification that calls openWindow() or focus() Should we bring the non private browsing window to the foreground? Here we probably just want to bring the window to the foreground. Scenario 2: 1. tab in fullscreen(private browsing or not) 2. user clisk a notification -> openWindow()/focus()