Having the exact same issue on Opera GX. Super super annoying. Doesn't matter what website, as long as it's a video i'll get the same issue. Contemplating moving back to Chrome at this point.
Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).