Just met an immortal and untargettable Ceasan.
The damn thing was hiding behind some trees, so i took them down with a rocket (not sure if i damaged the alien too). Anyway, after removing the obstacle, we managed to get the alien in our line of sight, but it was untargettable. Even shooting at its tile didn't manage to deal it damage. The Ceasan proceeded to keep squatting, shooting my poor soldiers and taking them down one by one while we helplessly kept firing at him both bullets and rockets (at its tile, since the game didn't let me target the enemy). Soldiers were firing at him with the "reflex" auto-fire too, but not a single bullet managed to hit it.
Then i quit the game, reloaded the ironman save and apparently the problem was fixed: i could finally target that alien correctly once again.
