i have experienced a weird thing that no other monk i have spoken to has experienced i am a harmonious monk lvl 43

sometimes i get costfree attacks it happens with a sound  and then there is a thin green frame around my abilities then when i clickt hem they dont cost endurance or anything, it happens with finishers too, even when i dont crit.

and the green line that symbolizes the countdown is not there either so no countdown, i can just use a few abilities cost free, not that this ONLY happens in group and never solo, can any1 explain what it is or has anyone ever experienced the same thing?

Yeah, that sounds like a rescue promt for Waning Palm. The UI is letting you know that your defensive target is below 20% health.

Usually thats the time I wake up from tanking and use my Jeering kick another 1231234897140981723049 times in a row.

~QTM

It's not considered a finsher move. It has its own classifactaion of "Rescue".  You are in essence trying to save that person by applying a debuff and dealing damage. to the bad guy attacking your defensive target.

~QTM