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i have seen this issue on google chrome (pixelbook), and the issue does not happen in chrome incognito mode. initial customer service has been disappointing, i got redirected to 3 reps before they redirected me to another team.
solution: if you're seeing the same symptoms i'm seeing, try chrome://extensions/ and disabling each extension (refresh the prime video each time) to see which extension is the culprit. for me, it was some issue with the viral-launch extension.