First time I encountered this bug, I was running this FP 2-man with a friend. He was tanking on a Jedi Guardian, I was on my Gunnery-spec DPS Commando, and both of us had companions out (1 melee DPS and a ranged Healer). During the shield/orbital bombardment phase, the two Imperial Operator minions that showed up had... interesting problems. One of them would properly lose its shield from the targeted Orbital Bombardments from Major Travik, but the other would never lose the shield even when hit by the Orbital Bombardment multiple times. Major Travik would never drop his shield due to this; thus making it impossible to get past Major Travik and rendering him both invulnerable and an Orbital Bombardment spammer.
Second time after the quickfix was implemented in the 2.9a patch, the same problem with the Imperial Operators occurs; one of the Imperial Operators loses his shield from the Orbital Bombardments but the other one still keeps his shield.
The only difference is that Major Travik DOES lose his shield once both minions are downed. This means that the fight is now technically feasible, but this particular phase now becomes a huge headache to melee tanks and melee DPS, since they still have to worry about being pummeled by Orbital Bombardments as they are attempting to tank/DPS down both Imperial Operators. The second time, I was running the FP with a full group through Groupfinder; and I was once again on my DPS Commando.