I did experience some weirdness with the pen strokes yesterday. Some combination of changing window focus causes the pen to stop registering subpixel positions, so the lines get super jagged especially when you draw slowly, but the strokes look “ok” when you draw quickly because of the stabilizer.
It becomes especially noticeable when you try to draw horizontal or vertical lines.
Sometimes it goes back to normal. Other times, I have to restart the program. But sometimes you probably wouldn’t notice it happening until you try to draw slowly.
I’ll post again if I find out what exact combination of stuff to replicate the bug.