The Scottilingamoids were getting their butts handed to them, so to keep some balance in the galaxy (and a nice trading partner) I thought I'd help him out without getting involved in the war. So I gave him a nice medium defense vessel... which he left hanging around my planet. I thought maybe it was a glitch, so I flew a medium fighter in range of the fleets that were harrassing him, but no, he just left it floating there to be wiped out a few turns later.
Is this known? I have a save file if it'd help.