Hmm, https://dev.azure.com/web-platform-tests/wpt/_build/results?buildId=1083&view=logs for #14198 passed but https://dev.azure.com/web-platform-tests/wpt/_build/results?buildId=1090&view=logs did not. /infrastructure/assumptions/allowed-to-play.html failed. Needs investigation...

It passes (or matches expectations rather) for me locally with macOS 10.13 and STP 70, which are the same versions.

OK, problem didn't repo when reverting to STP 67, and also not when unpinning again. So /infrastructure/assumptions/allowed-to-play.html is probably flaky on Safari. It might have already been flaky however. Since Azure Pipelines is still not blocking, I'll merge this and will see if this keeps happening.