|found|855346 1:52.4.0-1 fixed 855346 1:52.4.0-2~exp1
Greetings,been hit with the same issue (GNOME 3.26 environment), and while I can't comment on what apparmor-ing was expected to achieve, the experimental version does fix the "can't open attachments" issue for me.
Thanks! -- Cyrille
