I brought iPad Pro and MK for iPad to apple yesterday, It is really hard to describe this problem to a Genius, who is behind a plexiglass screen, and talking through a small hole, and even trying to manipulate the keyboard or iPad to show your existing problem. Solution provided, is simply to swap out my existing keyboard for a new one. They didn't have one available, so they will call me when it arrives. In the meantime, I went and bought a new one at a local store, thinking, I didn't have time to waste in seeing if a new keyboard would do the trick. and also knowing I would bring it back as a return merchandise that I didn't like. I found out immediately, that the new one didn't fare any better. Still the same bug. I again, took up my old one, and reset the whole thing to new, and did a restore using iMazing. No problem there, however AT touch bug still there. I decided to do go to Reset, and Reset all settings. Had to re-input lots of stuff, but not too drastic. Went to AT, turned on, and Off, back and forth, Pointer is working, and right size, and scrolling is working, and AT bubble shows up with customizations. Kept Perform gestures to OFF position. For now, Everything is holding on, and working, but will test next day or two to see if this Reset all settings might have done the trick.