This happens when the destination is in the FoW and the destination is a dead planet.  The ship will move as close as it can to the destination, and then stop and await new orders when the dead planet is within 1 turn, as it cannot move there.

Unknown_Hero:  your bug reports are appreciated; however, if you have more information about when and how this happens, it might be more useful on those reports.  If you already knew that the destination was a dead planet, for example, that would have been useful in the original post.  

cool, you place a lot of posts, and I agree with pretty much all of them.  It stinks that some of the long standing bugs have been ignored.

I tend to overlook most of these issues (as they likely won't be fixed) but I appreciate you bring them up on the forum.

-