Ships built on my worlds are supposed to go to a Rally Point. What some (not all) are doing is leaving the planet orbit and sitting in the first square untill i move them manually. It's odd because ship 1 will go to rally ppoint, then 2 will, but 3 will hang up, then 4 will go to rally while 3 sits there. I can wind up with tons of ships stuck there untill i move them. Its not a single ship but many.

Also on the stacked ship screen many times I'll select certain ships/fleets to go somewhere but it will lock up after the first ship/fleet goes.