If you have some time to spare, could you test whether the upstream builds (which can be downloaded from https://www.mozilla.org/firefox/download/thanks) are similarly affected, and if so, file an upstream bug report at https://bugzilla.mozilla.org/enter_bug.cgi#h=dupes%7CFirefox ?
If you have some time to spare, could you test whether the upstream builds (which can be downloaded from https:/ /www.mozilla. org/firefox/ download/ thanks) are similarly affected, and if so, file an upstream bug report at https:/ /bugzilla. mozilla. org/enter_ bug.cgi# h=dupes% 7CFirefox ?