I don't know if it's a setting or something that changed today, but I'm having an issue where Fist of Fury is cancelling itself during the channel. It doesn't happen all the time, but about 30% and it seems to be happening when I'm moving around an add or boss holding right-click and strafing.
Can confirm..noticed it right away today doing World Quest. Went ahead and did a Mythic+ and it happened so many times I lost count. Logged off and played on an alt I was so mad. Please scream, yell, and holler so this gets patched asap. Good luck all!
so, i went to a dummy and I can back pedal and still channel FoF, no issues (even moving well outside the hit box)....but as soon as I turn left or right (right click turn) it has a good chance of cancelling itself.
Can confirm that it is NOT only related to the aforementioned trinket as I've triggered this bug without any trinket-related procs or alike. Hopefully someone from US can mention/spam the issue in their forums.
It usually happens when you gain a buff. The mana geyser buff in Suramar cancels it when you walk into it after it procs. Watch your buffs when it happens (though, it's never happened with me in raids).