Happened multiple times to me. The ship doesn't come out of the dock smoothly, and it can get stuck there for a second - then you don't have to fly out right away, and can stay in the dock.

https://i.imgur.com/AiAoNul.png

long known problem, spacefungus

Wait this is a bug? I thought it was a feature!

Jokes aside, and although it's pretty funny to bounce around, it can get a tad annoying.