Certain application icons disappear from system tray

Submitted by Liv

Assigned to Nick Schermer

Link to original bug (#11298)

Description

Using xfce4-panel 4.11.0 under Xubuntu. This report is either a duplicate of, or duplicates Bug 10842.

I often get hit by applications that, although were working perfectly fine previously, at one point their systray icon simply disappears away. Quitting and restarting the app doesn't make the icon reappear in the Notification Area, which would point to some implementation issues in xfce4-panel. In my case the offending missing icons are for Liferea and SpiderOak.

Version: 4.10.1