The lightsaber one is common, although it never happens to me. However, I have experienced the second glitch you've mentioned. First time I saw it was on Tatooine. I was supposed to kill a group of Tusken Raiders (TOR's Sand People ) but as soon as I attacked them, they just "evaded" and went back to their positions.
Those are the only glitches I've seen so far with a LVL39 Sith Juggernaut, LVL41 Trooper and deleted LVL37 Sith Marauder.
Speaking of games which still look like beta, I dare you to play World of Tanks.