On Thursday's Galaxy dungeon, there's a monster called "Golden Space Thief", which is the equivalent to the big bomb monsters in regular F7's. There's a bug involving these said monsters, in which they do not receive damage from basic attacks. They can only take damage from skills. This bug applies only to Pegasus F7 and the big special monsters, the small ones do take damage from auto attacks. Here's a short video to demonstrate the problem:
http://plays.tv/vide...7-bug?from=user
( Please forgive my questionable taste in music )