I just found a simple workaround for this issue. If empathy autostart is delayed just for a second it is sufficient for messaging menu to be set up with correct status. So I edited ~/.config/autostart/empathy.desktop and appended following line:
X-GNOME-Autostart-Delay=1
which causes 1 second delay of empathy autostart and thats enough for messaging menu to be synchronized.
I just found a simple workaround for this issue. If empathy autostart is delayed just for a second it is sufficient for messaging menu to be set up with correct status. So I edited ~/.config/ autostart/ empathy. desktop and appended following line: Autostart- Delay=1
X-GNOME-
which causes 1 second delay of empathy autostart and thats enough for messaging menu to be synchronized.