Battle Bugs:* Monsters can very easily traverse impassible terrain and move through walls, examples:
Beadeaux: Quadavs can walk through the barriers on the upper cliff segments down to the lower area, they can also easily aggro and link through the floor!
Crawlers Nest: Crawlers and Bees will path through walls to chase you through tunnels
BCNM Under Observation: The hecteyes will path through the mountain side if you kite them down the hill
Job Bugs:Corsair* Something causes
Quick Draw to be completely unusable with the message "You cannot use that ability", this is incredibly rare and I haven't found the cause (after using Wild Card?) but zoning fixes it
Summoner*
Healing Ruby I will only effect yourself regardless of what target was selected
* Spirits cannot cast any spells,
Light Spirit can only cast
Regen on yourself