Currently i have this problem with palette knife.
By right, the brush dab should always be parallel to the stylus's tilt. But it seems like it doesnt respond to the stylus's tilt. I managed to solve it by "bearing" in the angle option in brush creator and it works in whichever way i tilt it.
But when i rotate the canvas using the alt+spacebar feature, the orientation of the tilt doesnt follow the way it should behave. It follow the bearing of the canvas instead of the stylus.
It kind of behave as if i tilt the monitor instead.
I remember lunatique had this problem and solved it by uninstalling and reinstalling.
I tried that too but it doesnt work. Currently using Painter X.
My painter 9 is working properly and have the exact brush setting, except that the "Expression" selection in angle option is grey out, while the one in painter X allows me to change.
Used to have the same problem with painter 9 but, for some reason it solved on its own.
Now the same problem with Painter X and i dont know how to deal with it. The f1 help topic doesnt help much.
Thanks for taking the time to read.