Bug where rogue rapid fire skill damage intermittently not registering on enemy. More specifically during legions.
im encountering the same thing with ice shards on sorcerer. was especially bad on the world boss.
This is caused by someone in the party using the Barber. I am pretty sure it is a bug, but that is the cause, in cause you were wondering.
is there a fix? cant do any damage in a party
You can remove the Barber, and so can everyone in your party. Other than that, you will have to wait till they fix the bug. The next patch is supposed to come out on the 2nd.
Just because it does no show damage numbers does not mean you are not doing damage, though. It is just stacking up for a few seconds before it is released.