Drawing in TVPaint with mirrored display using Astropad

[D.T. Nethery]

I haven't been using the iPad (with Astropad) to draw in TVPaint very often , but now my Cintiq is in the shop for repairs (bad cable), so I'm trying to use Astropad again so I can draw with my iPad in TVPaint , but many times TVPaint will not take any input from the Apple Pencil. Sometimes it works, but often (too often) it does not. Quit and restart TVPaint plus quit and restart Astropad can fix it , but that's very annoying.

I would like to blame it on Astropad , but TVPaint is the only app which has this problem Drawing in Photoshop or Sketchbook or Harmony works fine with Astropad.