I run into the same problem.
Some additional information:
- - - - - - - - - -
norbert@norbert-Veriton-M490G:~$ apt-cache show mail-notification|grep Version
Version: 5.4.dfsg.1-2.4ubuntu3
norbert@norbert-Veriton-M490G:~$ mail-notification
(mail-notification:21822): Gtk-WARNING **: Error loading
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: mail-notification (Ubuntu)
Status: New = Confirmed
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https://bugs.launchpad.net/bugs/888455
** Summary changed:
- crashes on systray icon right click
+ mail-notification crashes on systray icon right click
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https://bugs.launchpad.net/bugs/888455
Title:
mail-notification