I'm using Zoiper5 on Ubuntu 18.04 in Gnome 3 (Wayland) and I can't use the 'close to tray' feature as Zoiper is not shown in the tray. So when I close Zoiper to the tray, it's just gone and I have to terminate the process.
Is there anything I can do to make it show up?
Phone version: Zoiper5 5.2.16 for Linux 64bit
Library revision: v2.8.95
Phone revision: 5.2.16_Linux
UI revision: 1.1.31