[Snake]

All of Priest's Treatment skills are not working.

You target an ally afflicted with the specific status effect, and it does nothing.

I can't confirm if the 'Staff' version of this is any different due to its range increase or not due to a lack of access to the Testing Server, but so far yes.

Nada, chief.

[Neus]

This bug report doesn't have nearly enough information. A simple test with a Burn LV 1/duration 1 and Cool Burns did remove the status effect.

Please make sure you abide by the sticky guidelines and try to post more detailed information. Otherwise, I will not be able to fix it, assuming there is even a bug.