Andy, your comment is off-topic for this bug but I'll respond anyway.
The pref is intended to do exactly what it says -- prevent sites from raising themselves and making pop-under windows. Both are quite common annoyances. Bug 355482 covers unbreaking sites that use window.focus() to re-focus a legitimate pop-up.
Andy, your comment is off-topic for this bug but I'll respond anyway.
The pref is intended to do exactly what it says -- prevent sites from raising themselves and making pop-under windows. Both are quite common annoyances. Bug 355482 covers unbreaking sites that use window.focus() to re-focus a legitimate pop-up.