Interesting...
Tony - Memphis
If you Google Chrome black background, I see issues going back several years. Mine just started a couple of weeks ago. I'm not sure about Chrome upgrades - it may very well have performed an upgrade without me knowing. I tend to set everything to auto upgrade these days so i don't have to worry about it. I work for a large corp. that DIDN"T upgrade W7 automatically and, well, WannaCry took us out for a few days! Oops!