I'll get straight to the point. Sometimes while I draw, way too often, the color selector tool pops up for not even a second and without me prompting it, and picks whatever color is there. It completely ruins my flow because I have to change back to whatever color I was using and undo any lines I might have drawn with the wrong color.

I don't know what might be causing this. If I did I might be able to fix it. I'm using a Wacom Intuos 3, Krita 4.1.1 on Windows 10.

I am thankful for any help or ideas I get.

If you haven't rebound shortcuts or changed canvas input settings in Krita, I'd suspect WIndows or Wacom gestures or flicks.