Similar problems exist with for example expressVPN (which recommends to uninstall the snap version and install a ppa-version of firefox instead: https://www.expressvpn.com/de/support/vpn-setup/app-for-linux/#software-center) and with the video-download-helper extension (https://www.downloadhelper.net/).
Same thing: native manifest.
See also here: https://forum.snapcraft.io/t/firefox-from-ubuntu-snap-store-doesnt-support-download-helper/5663
Similar problems exist with for example expressVPN (which recommends to uninstall the snap version and install a ppa-version of firefox instead: https:/ /www.expressvpn .com/de/ support/ vpn-setup/ app-for- linux/# software- center) and with the video-download- helper extension (https:/ /www.downloadhe lper.net/).
Same thing: native manifest.
See also here: https:/ /forum. snapcraft. io/t/firefox- from-ubuntu- snap-store- doesnt- support- download- helper/ 5663