see https://www.mozilla.org/en-US/firefox/87.0/releasenotes/ fixes https://www.mozilla.org/en-US/security/advisories/mfsa2021-10/ - revert parts of #1696958 breaking downloads to ~/Downloads because of unveil() interaction, until a better fix is found. Or unveil support being ripped out, out of frustration. - patch out toolkit/components/downloads/DownloadUIHelper.jsm to make sure strings["downloadsFolder"] isnt localized, which would break downloads for users with a langpack installed/enabled (as ~/Telechargements isnt unveiled by default) - include patch from RJ Johnson in #1697721, fixing various web developer issues with profiles created after unveil() integration (missing <profile>/storage/permanent dir) - add a blurb to README about creating/using ~/Downloads with unveil()