Browser shifts to one side after reboot

[Socrates]

Each time i reboot, or when MM starts the browser does not fully open in full screen mode, but will shift to one side.
Have a look at the screenshot through VNC viewer.

This is intermittent, sometimes it will show up in full screen but most times it will show up shifted.

[sdetweil]

@Socrates what about on the real display, not over vnc…