User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0 Build ID: 20160507231935 Steps to reproduce: 1. firefox -no-remote -safe-mode -ProfileManager 2. Create a new profile. Actual results: I get a window that is too high: partly off-screen. My screen height is 1440 pixels, and the height of the Firefox window without window decorations is 1430, but more than 1440 if one takes window decorations into account. Expected results: The window should fit in the screen.
Generally, when starting from a new profile our initial window size values on all platform could stand some tweaking. This bug has been around since the beginning of time.