I tried opening "my" whiteboard in a second tab in Firefox (on Windows). The second tab's view is distorted, it reminds me of having a badly programmed modulo r

I tried opening "my" whiteboard in a second tab in Firefox (on Windows). The second tab's view is distorted, it reminds me of having a badly programmed modulo register on the Amiga. Which doesn't say much to most, I guess... It looks as if the scan lines are mis-aligned, i.e. as if some pixels in each line is missing from each, causing the resulting image to be slanted and distorted.