Just last night my Vorastra titan came in to save the day for my fleet and within the span of 2 minutes leveled up from 1 to 6 and I certainly needed it because for as much damage as my fleet was dishing out, it was taking a pounding.  Upon seeing it hit level 6 I immediately leveled up and manually targeted the maw.  It activates, I'm happy as can be now, except all the enemy fleet is just being ejected out the backside rather than vaporized at the 'mouth' of the titan like it should be.  It's now back to the way it was when Rebellion first came out.