I've noticed it also happens when using the "in app" browsers in Facebook or Twitter. I've also tried increasing the memory available to chrome using by typing in by changing maximum tiles for interest area to 512 to no avail.I haven't tried any other versions of chrome...did notice that I wasn't even able to load a page at all while photos were uploading, wonder it has to do more with how it's handling data traffic.
It just seems to have problems loading web pages for me. Sometimes I will just get black squares but other times it just wont load. I will refresh and get nothing for awhile. I'm doing this at home where my Note 4 wasn't having a problem. Also doing this on cellular data. I doubt this is a network issue.