For what it's worth, using the latest version of Opera One, when I scroll pages, the content is "blank" until I pause, then the web page appears. This happens whenever I scroll a page with a scroll bar.
A year ago Vivaldi had the same issue.
When I disable hardware acceleration, I can scroll without having the page go blank/white, although it's obviously laggy at rendering with hardware acceleration.
I'm running version 99.0.4788.88 again now and scrolling with hardware acceleration is smooth. There must be some underlying change to Chromium that causes this, some setting that isn't compatible with my Mac hardware that is enabled or disabled in Opera One. I can't even guess what.