Ahh, ok, thanks.
I found something else that is most definitely a bug:
If you capture a planet and take technology from an opponent, you lose all your accumulated research points REGARDLESS of what tech you're researching.
If I take Battleship from an opponent while I'm researching Battleship, I expect to lose the accumulated points, but if I'm 2 turns away from Battleship and take, say, Stellar Cartography from an opponent, I LOSE MY ENTIRE INVESTMENT in Battleship tech and have to start over!
The only exception to this bug is if you can complete research in the same turn. If you manage to do this, you get both the tech you're researching and the one you took from your opponent.