[snap] Gedit fails to launch

[Benjamin Tegge]

This happens on both stable and latest channel. I have Communitheme snap installed and Suru icons set. gnome-characters and other gnome snaps do run but fail to fetch theme resources on 18.04 (see #LP:1828664). I also installed the snap on 19.04 where it runs fine.

Steps to reproduce
------------------

$ sudo snap install gedit --edge
gedit (edge) 3.32.0+git39.87d21ca4a aus Canonical✓ installiert
$ snap run gedit
utils.go:684: cannot change mount namespace of snap "gedit" according to change mount (/snap/gtk-common-themes/1290/share/icons/Suru /snap/gedit/276/data-dir/icons/Suru none bind,ro 0 0): cannot use "/snap/gtk-common-themes/1290/share/icons/Suru" as bind-mount source: not a directory
Failed to register: GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: An AppArmor policy prevents this sender from sending this message to this recipient; type="method_call", sender=":1.367" (uid=1000 pid=3161 comm="gedit " label="snap.gedit.gedit (enforce)") interface="org.gtk.Actions" member="DescribeAll" error name="(unset)" requested_reply="0" destination="org.gnome.gedit" (uid=1000 pid=14025 comm="/usr/bin/gedit --gapplication-service " label="unconfined")

Version info
------------

$ snap info gedit
name: gedit
summary: Edit text files
publisher: Canonical*
contact: https://bugs.launchpad.net/ubuntu/+source/gedit/+bugs?field.tag=snap
license: unset
description: |
  gedit is the official text editor of the GNOME desktop environment.
  While aiming at simplicity and ease of use, gedit is a powerful general
  purpose text editor.

  Whether you are writing the next bestseller, programming an innovative
  application, or simply taking some quick notes, gedit will be a reliable
  tool to accomplish your task.

  Its flexible plugin system allows you to tailor the application to your
  needs and adapt it to your workflow.
commands:
  - gedit
snap-id: bhi7vd8JRi4WsPIAFmwm0LFaRBZs0j13
tracking: edge
refresh-date: today at 13:26 CEST
channels:
  stable: 3.30.2+git14.bed83e929 2019-02-15 (89) 6MB -
  candidate: 3.32.0+git22.7559e64e5 2019-04-25 (270) 8MB -
  beta: ^
  edge: 3.32.0+git39.87d21ca4a 2019-04-25 (276) 8MB -
installed: 3.32.0+git39.87d21ca4a (276) 8MB -