I use i3 on arch linux, it's a tilling manager. When I enable the restore previous session option, Firefox will have trouble with the size. If I close Firefox when it's on full screen, then I open an app and I reopen firefox should take half of the screen but firefox will stay fullscreen but the half part of the window will be outside of the screen (I can't access to the option of firefox). If I close Firefox in splited mode and I open in an empty workspace, it should take the fullscreen, the windows take the fullscreen but the content of the app will take only half of the screen. When this appears I have to open another app to force the scale and I can close it. Could you add an option to only open the tab and not all the settings (like chrome did and it work). Thank's in advance and have a nice day. Steven Jeanneret