Hello, I'm using roll20 on my Windows 7 PC and also my Windows 10 laptop. Sometimes, after I make a new page, I will draw something (for example, a line) on one blank page, For whatever reason, I may switch to a different page and find that that line has duplicated in its size and position on the different page. I'm not sure if my players can see it but if I'm drawing a map on a different page I don't want it appearing on the page my players are looking at. Any idea what this issue is and how to resolve it? Thank you.