For those crazy enough to try the Wayland native support on edge out:
$ diff /var/lib/snapd/desktop/applications/mattermost-desktop_mattermost-desktop.desktop ~.local/share/applications/
4c4
< Exec=env BAMF_DESKTOP_FILE_HINT=/var/lib/snapd/desktop/applications/mattermost-desktop_mattermost-desktop.desktop /snap/bin/mattermost-desktop %U
---
> Exec=env BAMF_DESKTOP_FILE_HINT=/var/lib/snapd/desktop/applications/mattermost-desktop_mattermost-desktop.desktop /snap/bin/mattermost-desktop --enable-features=WaylandWindowDecorations --ozone-platform=wayland %U
7c7
< Icon=/snap/mattermost-desktop/514/usr/share/icons/hicolor/256x256/apps/mattermost-desktop.png
---
> Icon=/snap/mattermost-desktop/current/usr/share/icons/hicolor/256x256/apps/mattermost-desktop.png
It is usable, but there are definitely some issues, so it isn’t ready for default