Comment 79 for bug 1959747

Frank ... comment 62 may render my comment 69 null and void, if the comment 56 regression range is in fact accurate. And I am skeptical of that [mozilla-central regression range 2021-01-27 to 2021-01-28](https://hg.mozilla.org/mozilla-central/pushloghtml?startdate=2023-01-27+06%3A00%3A00&enddate=2023-01-28+08%3A00%3A00). But you might try nightly builds in that date range.

You could copy your production profile that you are using for beta to a new profile for nightly builds, to leave your beta profile unaffected by testing.