I was playing the Evac mission. After the second wave of 2 corvettes are dispatched, one of my wingmen opens fire on the other! The other just sits there, and I tried a couple of wingman commands to get them to stop, but no luck.

I'll try it again, but that was weird.....

Could be a minor bug, or it could be the AI response to getting hit by stray shots. I've accidentally turned neutrals to enemies with careless use of firepower, so maybe that's what happened here. As to the other one just sitting there, maybe the script got broken when that happened.

Pure speculation on my part...