After selecting the Pixel persona I choose the paint brush tool to draw an object and suddenly I see these random straight lines generated on the board. They appear right when I click on the surface to draw a stroke. As soon as I use the Apple Pencil second generation these lines appear at random when I draw on the canvas. Has anybody else seen this issue? I'm using the official 1.7 release for the iPad Pro 12 9 2018 edition.