One more stray line thread for 21.1.0
I use Window 10 A Wacom Intuos Pro and several version of Photoshop configured to use wintab API for pen support. I thought I did not have a problem with the reported Stray lines to the upper left. I was wrong. Though I was not having the problem I can now produce it with my Wacom Pen. Not my mouse yet. Though I normal do not have the problem. I have set my pen bottom button to Right Alt+Right Click. Hovering the pen over the tablet with this button press I can set the size and hardness of my brush tip, This works very well and I can use brush tools and brush type tool with my pen. while printing I accidentally touch the bottom pen button. This triggered the stay line bug. It does not always trigger it but with a few tries it will trigger the bug. I will try to pin the problem down some more. I'll try other settings and Windows INK to see what effects that they may have.

