We had a JP tank call us Gaijins and leave the party without warning. As far as acting badly goes that's the worst I've seen in game so far.JP community IS fine, but English community IS NOT fine.
I would have already quit this game ages ago if there is no JP community.
Imagine I can only party with *English players in this game. Ew! Disgusting!
*Again, most of them are rude, arrogant but not all of them*