Comment 2 for bug 1841137

As a further test, I tried removing the telegram-desktop snap entirely, now all past revisions are stuck as "deleted":

$ losetup | grep deleted
/dev/loop47 0 0 1 1 /var/lib/snapd/snaps/lxd_11353.snap (deleted) 0 512
/dev/loop8 0 0 1 1 /var/lib/snapd/snaps/lxd_11437.snap (deleted) 0 512
/dev/loop63 0 0 1 1 /var/lib/snapd/snaps/telegram-desktop_877.snap (deleted) 0 512
/dev/loop51 0 0 1 1 /var/lib/snapd/snaps/lxd_11633.snap (deleted) 0 512
/dev/loop38 0 0 1 1 /var/lib/snapd/snaps/telegram-desktop_891.snap (deleted) 0 512
/dev/loop9 0 0 1 1 /var/lib/snapd/snaps/lxd_11595.snap (deleted) 0 512
/dev/loop14 0 0 1 1 /var/lib/snapd/snaps/telegram-desktop_836.snap (deleted) 0 512
/dev/loop60 0 0 1 1 /var/lib/snapd/snaps/lxd_11672.snap (deleted) 0 512
/dev/loop3 0 0 1 1 /var/lib/snapd/snaps/lxd_11643.snap (deleted) 0 512