And now more serious bug. During base defense, I managed to stun Cyberdisk. I thought that all the cybers are dead and sent team of three people with stun pistols and rods to capture live sectoids. At the start of the turn, right behind the door stood a cyberdisk. I remember that you cant stun tanks in vanilla. But though. Hey, what if. And three of my guys somehow managed to stunn it. Final strike, I believe was a stun pistol. And, at the end of the mission I`m getting a crush screen reffering to invalid live alien or something like that. I loaded a save before killing final alien. Tried to finish "body" of a disk with grenades, but it didn`t help. Still crush. Had to replay. Luckily, I saved right after I stunned him. Save file in the attachment. He is lying right by the main door of the hangar that is connected to main lift.
I presume, this could happen even by using something like a stun bomb.