The snap now supports native messaging through the use of [the `WebExtensions` portal](https://github.com/flatpak/xdg-desktop-portal/pull/705), which is available as a distro-patch in Ubuntu 22.04 and 22.10.
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The snap now supports native messaging through the use of [the `WebExtensions` portal](https://github.com/flatpak/xdg-desktop-portal/pull/705), which is available as a distro-patch in Ubuntu 22.04 and 22.10. I am not closing this bug yet, because even though the patch has been cherry-picked in the snap, it hasn't landed in the tree yet.