as far as I know nobody had any flying problems with the fenestron despite performing prolonged max speed spot turns in either direction
There were at least two occasions of "fenestron stall" at MW. One was a solo student rapidly pirouetting out of dispersal before recovering control.
The other was me. Mutual tac sortie on the APC. Hover taxying across a field up on the ink pen ridge, flying from the lefthand seat. Saw what I thought was a line of beaters(pheasant shoot) ahead, so stuck in a boot full of left pedal to turn away. The aircraft spun rapidly to the left. Tulles power to get away from the ground which, of course didn't help. Thought I put in full right pedal, but maybe I didn't. My stick buddy was an experienced crewman, saw that I wasn't coping, took over and got things under control.
After we recovered our composure, we made our way home deciding not to tell anyone.
Oh, and I can't remember what they were, but they weren't beaters.