I see diagonal patterns of blank squares on Google Maps. I have been seeing this on Firefox across all my Macs. I do not see this in Safari.

google_maps1.png
Zoomed all the way out.

google_maps2.png
Zoomed in a little.
google_maps3.png
Zoomed in a lot.

google_maps4.png
Note the blank square in the
zoom box in the lower right corner.

Has anyone else seen anything like this? Restarting Firefox doesn’t fix it — I’ve disabled all my extensions. It’s very weird.

Update: Found it.  Turns out I had somehow had “Load Images automatically” turned off, and had “mt1.google.com” blocked to boot.  I don’t quite know how that happened, except for maybe an inadvertent mouse click at some point.