Comment 5 for bug 960288

This program is caused by programs that send notifications with a null summary.

I have fixed this bug in Geary and have done some research around this problem [1]:

> Giving a quick look to https://developer.gnome.org/notification-spec/ it
> seems that 'body' is optional and may not be supported by all notification
> servers (Table 1. Notification Components, Table 5. Server Capabilities).
> 'summary' seems to be required, although I couldn't find any explicit
> sentence saying so.

So the problem seems to be arised by applications that do not follow the specification. However it's worth noting that Notify-OSD could be smarter and show the body of the notification even if no summary has been set.

[1] http://redmine.yorba.org/issues/6894