>Could you grab the libayatana-appindicator library package [1] from >Debian unstable (0.5.90-4, uploaded today) and pull that in onto your >system and check if the problem disappears after logout / login? Thanks.
I installed libayatana-appindicator3-1 0.5.90-4, logged out of the X session (X restarted as usual) and nothing changed, apart from the bluetooth and email icons now appearing in the indicator, as I had installed ayatana-indicator-bluetooth and ayatana-indicator-messages But no Telegram, Skype and Slack icons any more... -- Francesco Potortì (ricercatore) Voice: +39.050.621.3058 ISTI - Area della ricerca CNR Mobile: +39.348.8283.107 via G. Moruzzi 1, I-56124 Pisa Skype: wnlabisti (gate 20, 1st floor, room C71) Web: http://fly.isti.cnr.it