Recently, WOW server becomes a very high lag and will cause RJW N/A BUG in high lag. And Roll or CT won't stop too for a long time.
When you are in a very high lag, you use RJW will cause RJW becomes N/A. RJW won't stop and don't cost mana or energy but no longer generate chi.
Please report this bug to BLZ.
I show the picture which is first found by a player in China.
Not just him. My RJW also becomes N/A if server lag is high too and many monks have found it.
I played MONK in very high lag server for a long time, but this bug is only happened recently. It never happened before wow6.1.