Don't know if anyone else has been experiencing this issue and it may just be related to all the lag and server issues, but sometimes when going from ground to space or sector space to system space all my crew dies. Not the bridge officers, but all of the faceless guys that supposedly crew your ship.
But this slows down repairs and if further crew effects are implemented then this would be an extreme annoyance to have to wait a few minutes after zoning in for the crew to come back because you changed maps.