Bugs I've found

Jett:
-You do not job advance at lvl 30
-At lvl 70, you change to cannon shooter

Samurai(Bandit):
- Dark Sight D/C's
- I don't know if it's intentional or not but there is a cooldown for "Savage Blow" and "Phase Dash"

Demon Slayer:
-Randomly changes job advancement when leveling up
-You do not have demon aegis

Other:
-There is trouble with putting on equips that are your level
-You can't buy "Magic Scales" in cash shop
-There's no magnifying glasses to reveal potential O.o
-I don't think Monster Park lets people go in, it always says someone's attempting it
-Dojo does not work
-Empress does not spawn
-When completing Future Henesys quests, they subtract exp instead

I think that's it so far~

if you would read forum posts
you would see all these are known bugs
http://www.dcmsforum.net/t7002-post-all-errors-in-this-thread