Mac OS X 10.8.2 on a Macbook Pro w/Retina display, Chrome 23.0.1271.64 with embedded Flash.
As I move to the left or right sides of a street, the background graphics drop out or get misaligned, apparently layer by layer, until at the extreme edges, there's little to no background at all.
cl.ly/image/021k411U3X2k
cl.ly/image/281h3G15400z
cl.ly/image/391R1J3s3B15
Update: It's not every street. I've noticed it in my home street, Cebarkul, Oktyabra, GFJ, and Adanac, but not Camsteeple Strat.