It happens randomly and it happens to one person. Lemme explain it. Sometimes, when I get to next review demo, the whole screen (only the google maps part) gets black screen and when I reload the site, same issue continues. Bottom right corner map and compass is working fine but the part you click and zoom into things (the main thing yk) gets black screened. I tried closing/opening hardware accel., tried to remove all extensions, tried different browsers and same thing still happens. And as I said in the first place, this bug happens to same person who I watch. If I get more reports of the same guy (like back to back reports, every stats are same), the issue continues but when the person changes, the black screen issue is gone.