I'm curious if anybody else has encountered this. In a recent game I was playing as the Dregin, I found that attacking the Arcean starbases or shipyards wasn't actually destroying those bases. The graphic would show the explosion on the main map and the base would disappear, but it would reappear unharmed next turn. Also the ships that attacked could now no longer move even though they had moves remaining. In one case when this happened, it seemed to lead to the infinite waiting bug at turn end, something I've not seen in some time.

Eventually this was resolved by just taking over the Arcean worlds. Once the bases became neutral pirate bases the glitch was gone. This hasn't happened before with any other races starbases, just the Arcean ones, and only Arcean starbases and shipyards caused this issue as I could attack everything else normally.