This is a funny one. On both my desktop and laptop I have permanently open Chrome browser windows with a tab on Twitter home. About a week ago, the one on my desktop started badly misbehaving, showing only mostly white space and the occasional image which might only show when my cursor was over it. Meanwhile, the one on my laptop is just fine. And, on the desktop, if I open a tab in Firefox for Twitter, that works just fine. The desktop has uBlock Origin and AdBlock Plus installed, but I turned both off and the Chrome tab did not improve.