Interesting glitch?

for the first time I tried the small window version (instead of full screen) and there seems to be some sorta glitch where the background doesn’t show, and things stay ‘etched’ on it, anyway, it looks pretty cool, so I snapped some pictures of it

here are all the ‘connections’ between the icons lit, (and you can see the complete net):

Interesting indeed. possibly a video-card related thing, or you might just be running out of video memory?