Random blotches appear mid screen when I Ctrl+Z
I'm currently using a Wacom Intuos with Fresco 3.8.1. Yesterday it was all good, but today whenever i "undo" a blotch appear mid screen as if I just made a dot with my pen. It looks like which ever brush I'm currently using. It happened occasionally before the update too but now it happens almost every time, I'd say problably 80% of the times I Ctrl+Z. Very frustrating and it makes the drawing experience extremely disruptive. Anyone else having this or a similar problem? Any ideas towards a solution?
