Problem with Yosemite (OS X 10.10) and enlarging empty web pages with Firefox 34
I'm running a Mac Pro 5,1 with Yosemite 10.10 and Firefox 34beta. When I open a new empty page with Firefox and then try to enlarge that page, the enlarged region of that page becomes filled with garbage. Reducing the size doesn't do that at all. This issue began as soon as I upgraded to Yosemite. I've never seen that issue before Yosemite.
OS X Update 10.10.1 doesn't solve the issue. The issue is not present when the newly opened page is not empty.