In lamania monk stunning fist can insert attack chain.
But only one attack roll, you lost one attack hook.
Why?

You can test it, with full twf chain, monk can attack 10times per chain.

But when you use stunning fist in the chain, you can only attack 9times.

And when you equip weapons in your hand, you can't use stunning fist anymore, it said wrong weapon type. this is good.
But when you use quivering palm, you still lost 30ki, and no attack, no animation, just like mod8 now.

Why turbine only fix this problem in stunning fist, but forgot about quivering palm?

I had submited a bug report with detailed info, hope I can get a feedback from DEV.

I hope you guys who have monk in lamania, just spare some time to test these to see if I am wrong, maybe I am too careless to have a wrong idea.