Output of `journalctl -f | grep DEN` when trying to save to the network share is as follows:

```
Mai 04 11:30:18 athlon audit[5959]: AVC apparmor="DENIED" operation="open" profile="snap.firefox.firefox" name="/run/mount/utab" pid=5959 comm="firefox" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
Mai 04 11:30:18 athlon kernel: audit: type=1400 audit(1651656618.225:90): apparmor="DENIED" operation="open" profile="snap.firefox.firefox" name="/run/mount/utab" pid=5959 comm="firefox" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
Mai 04 11:30:18 athlon audit[1151]: USER_AVC pid=1151 uid=103 auid=4294967295 ses=4294967295 subj=? msg='apparmor="DENIED" operation="dbus_method_call"  bus="system" path="/org/freedesktop/hostname1" interface="org.freedesktop.DBus.Properties" member="GetAll" mask="send" name=":1.231" pid=5959 label="snap.firefox.firefox" peer_pid=12048 peer_label="unconfined"
Mai 04 11:30:18 athlon audit[1151]: USER_AVC pid=1151 uid=103 auid=4294967295 ses=4294967295 subj=? msg='apparmor="DENIED" operation="dbus_method_call"  bus="system" path="/org/freedesktop/hostname1" interface="org.freedesktop.DBus.Properties" member="GetAll" mask="send" name=":1.231" pid=5959 label="snap.firefox.firefox" peer_pid=12048 peer_label="unconfined"
Mai 04 11:30:18 athlon audit[1151]: USER_AVC pid=1151 uid=103 auid=4294967295 ses=4294967295 subj=? msg='apparmor="DENIED" operation="dbus_method_call"  bus="system" path="/org/freedesktop/hostname1" interface="org.freedesktop.DBus.Properties" member="GetAll" mask="send" name=":1.231" pid=5959 label="snap.firefox.firefox" peer_pid=12048 peer_label="unconfined"
Mai 04 11:30:18 athlon audit[1151]: USER_AVC pid=1151 uid=103 auid=4294967295 ses=4294967295 subj=? msg='apparmor="DENIED" operation="dbus_method_call"  bus="system" path="/org/freedesktop/hostname1" interface="org.freedesktop.DBus.Properties" member="GetAll" mask="send" name=":1.231" pid=5959 label="snap.firefox.firefox" peer_pid=12048 peer_label="unconfined"
Mai 04 11:30:18 athlon kernel: audit: type=1107 audit(1651656618.313:91): pid=1151 uid=103 auid=4294967295 ses=4294967295 subj=? msg='apparmor="DENIED" operation="dbus_method_call"  bus="system" path="/org/freedesktop/hostname1" interface="org.freedesktop.DBus.Properties" member="GetAll" mask="send" name=":1.231" pid=5959 label="snap.firefox.firefox" peer_pid=12048 peer_label="unconfined"
Mai 04 11:30:18 athlon kernel: audit: type=1107 audit(1651656618.313:93): pid=1151 uid=103 auid=4294967295 ses=4294967295 subj=? msg='apparmor="DENIED" operation="dbus_method_call"  bus="system" path="/org/freedesktop/hostname1" interface="org.freedesktop.DBus.Properties" member="GetAll" mask="send" name=":1.231" pid=5959 label="snap.firefox.firefox" peer_pid=12048 peer_label="unconfined"
Mai 04 11:30:18 athlon kernel: audit: type=1107 audit(1651656618.313:95): pid=1151 uid=103 auid=4294967295 ses=4294967295 subj=? msg='apparmor="DENIED" operation="dbus_method_call"  bus="system" path="/org/freedesktop/hostname1" interface="org.freedesktop.DBus.Properties" member="GetAll" mask="send" name=":1.231" pid=5959 label="snap.firefox.firefox" peer_pid=12048 peer_label="unconfined"
Mai 04 11:30:18 athlon kernel: audit: type=1107 audit(1651656618.313:97): pid=1151 uid=103 auid=4294967295 ses=4294967295 subj=? msg='apparmor="DENIED" operation="dbus_method_call"  bus="system" path="/org/freedesktop/hostname1" interface="org.freedesktop.DBus.Properties" member="GetAll" mask="send" name=":1.231" pid=5959 label="snap.firefox.firefox" peer_pid=12048 peer_label="unconfined"
```