The Graphical Glitch still exists after months.
I don’t know, if that, what I experienced today has something to do with it or not but when I saw those glitches and experienced with changing graphics, but nothing new here only geometry reduced the problem but didn’t solve it entirely, and tried zooming in and out in and out, my game froze.
I had to shut it down and I saw, my Firefox, with some active YouTube-Windows in it, was totally white, nothing to see there, had to shut it down via Taskmanager.
I only know this Firefox bug from problems with the Adobe Flash Player.
So I’m not sure, if this is a separate and new problem or if this has something to do with the graphical glitch.