The Warp, Bump, Pinch & Twirl tools are not working on iOS.
Smudge tool is working ok, as are all other tools like pen, burn, etc ...
Smudge tool is sized on the Brushes pallet where as the other warp tools are sized at the top of the window.
The 'feeling' I have is that the warp tools are not responding to sizing and for some reason not working at all ??
The tiny pointer is not becoming a larger circle as the diameter is cranked up.
System is iMac (Retina 4k, 21.5, 2017) with macOS Mojave. Wacom Cintiq 24.
Have tried everything, and have double checked I'm working on the right layer, etc ...
Thanks in advance for any suggestions.