alright, a little update:
i found when you run on auto-checklist then the entry hatch gets really closed, so then you see the hatch with the bulleye, everything ok.
But when i did the manual launch i seem to have not pressed the "lock door" botton because i could launch with apparently the door open.... which would be a rather interessting mission ;-)
So maybe you make something that it is only possible to launch AFTER the entry hatch is really closed and locked ;-)