(In reply to S. B. from comment #2) > Hi Frank, thanks for the fast reply. Yes, I understand that this is an > upstream Firefox issue, but I was under the impression that they already > fixed it. > > > We rolled-out a fix for release, beta and nightly users on Desktop. > > So, is the "fix" that they mentioned in my previous link related to the > Studies thing, and not a permanent fix? >From the discussion at https://bugzilla.mozilla.org/show_bug.cgi?id=1548973 I understand that it is fixed on short notice by enabling/disabling studies, but they "are working on a general fix that doesn���t need to rely on this and will keep you updated."