Pidgin 3.0.0devel tray icon not working on KDE Plasma 5.5

[Bjoern Voigt]

I recently switched to the latest KDE desktop (KDE Plasma Desktop 5.5).

Unfortunately the Pidgin 3.0.0devel tray icon is not working anymore. The icon itself is very small, see screenshot
http://paste.opensuse.org/12220302

When I click on the icon, the menu does not show up.

For Pidgin 2.10.x there are two working solutions (1) Pidgin 2.10.x used GTK+ 2.x which is handled by KDE plasma 5.5's "xembedsniproxy"; 2) with the Pidgin pidgin-indicator plugin).

Is there a working solution for Pidgin 3.0.0devel? SNI and libappindicator-gtk3 may help. libappindicator-gtk3 is made for Ubuntu Unity, but should work for KDE Plasma too. Please consider the technical details from Wolfgang Bauer:
http://lists.opensuse.org/opensuse-factory/2016-03/msg00021.html

As a temporary work-around I disabled the tray icon in Pidgin preferences.

Greetings,
Björn