I've tried it on linux and windows 10, on 2 different computers (both were nvidia/intel combos). I've used wacom cth-680 and (linux only->) huion q11k on wacom's linux drivers.
On linux, usually when I start paintstorm the pressure sensitivity is not working, but if I just alt tab and leave it in the backgruond for a minute or two and go back in, it will start working again. It seems to keep working after that.
On windows 10 the pressure sensitivity works fine after I start it, but while I was in the middle of drawing something all of a sudden it stoppped working, recognizing the issue from linux I tried just leaving it in the background for a minute and came back to it and it worked.
This is a really bizarre issue and the way it can interrupt the workflow is completely unacceptable.
Pen Pressure sometimes stops working.
Re: Pen Pressure sometimes stops working.
It can happen if the main window loses focus, and must be cured by alt+tab to another windows and alt_tab back to Paintstorm, or minimize and maximize Paintstorm.