If the page is scrolled and there is another window overlapping it, that window's border, etc. gets "smeared" onto the web page and/or the page repeats itself in 3 or 4 pixel-high lines where it was hidden by the other

Not happening anymore with M13 (build 2000012520). I can actually see the refresh happening where overlapped windows have been as I scroll now instead of the top of that window.

**Mass Spam** Adding verifyme keyword to all non-verified bugs on browser general.

tested on 2000092710MN6 linux build. Looks like the smear is gone.