Thank you for reporting this bug. This problem is something we’ve been investigating for a while internally. We need to improve the user experience around installing snaps when we know the sandbox confinement is not what we designed it for. Right now the consequence of that is that large chunk of the sandbox is disabled and we claim (as seen by “snap debug confinement”) that the confinement is *partial*. We’d like to improve the language around that and use more of the available features, even if some specific bits are missing. In this case we could still use the file, path based confinement as long as we can clearly communicate to the user that installed applications are not strictly confined in some sense, here it would be, I believe fine-grained DBus mediation that is missing.
The bottom line, we acknowledge the bug and are looking at best options for snapd 2.41.
