This is what I mean:
It happens reliably when I rotate my phone, open my phone from the lock screen or switch between different apps.
Clearing cache/cookies does not prevent the issue. Closing a tab and reopening it will fix it, until I do one of the things mentioned above.
This first started happening around about 15 hours or so ago.
I'm running ios 13.6 browsing on chrome 84.0.4147.71
Safari does not appear to be affected