I've noticed this bug in both the latest beta version and the most recent regular updated version as well as previous versions, however, I don't remember when I first noticed this happening. When I search for a ship using the planet/ship search button and find the ship I'm looking for I select it with the search window still up, the game makes the sound like I just clicked on several ships really fast. (several click noises) I then try to move the ship and it will move very slowly and stop as if it's in route and will move the next turn. If I go to a different area on the map and select a different ship to try to move it, it continues to do the same thing except for after it stops barely moving the new ship it will auto move to the origional ship but, still not move it.
I don't know any better way of discribing this problem. I can send a debug.err file however, I'm sure that this happens in any of my games so it's not just game specific to the game I'm running right now. I think as long as you understand what I'm discribing you should be able to reproduce it because I also noticed this problem on my other computer as well before I got my new computer.
I hope this makes sense and I'm sorry for any confussion. Any quesions I'd be happy to try to explain further.