[Bug Report] Missing tray icon after unlock

[gciatto]

Describe the bug
The tray icon is missing after the system is unlocked, but WALC is still running, and there is no way to show it back.

WALC Installation Type: WALC 0.1.9(15), running on Ubuntu 20.04 LTS x64, installed through snap

To Reproduce
Steps to reproduce the behavior:

1. WALC is correctly started and running. The WA icon is correctly shown on the system tray
2. The user locks the system
3. The user unlocks the system by providing his/her password
4. The tray icon is gone, but WALC is still running
5. If WALC is minimised there is no way to show its window again

Expected behavior
The icon should not disappear if the system is (un)locked

Did you try closing and then opening it back?: Yes, that's the common solution: I must kill WALC and restart it

System Information (please complete the following information):

• OS/Distro: Ubuntu 20.04 LTS, 64 bit

[cstayyab]

This issue not particularly related to WALC but in general with many apps including Signal-Desktop, Caprine and many more.

Following is the related upstream issue that must be fixed to get it working ubuntu/gnome-shell-extension-appindicator#220

Edit: This PR from another repository zulip/zulip-desktop#922 can be helpful in solving the issue but this PR is still a Draft.

[validatedev]

Yeah, it happens to me also. But, my other applications are not affected by the bug. Thus, indeed there was a problem the app itself.

[Zzombiee2361]

Are these "other applications" you're talking about electron apps?

[validatedev]

Are these "other applications" you're talking about electron apps?

i.e. there isn’t any problem with Discord and Telegram. Discord is an Electron app.

Edit: Tried whatsdesk: https://gitlab.com/zerkc/whatsdesk, there isn't any problem either.

[cstayyab]

This problem is no longer reproducible at my end on Ubuntu 20.04. Can you please verify?

CC: @gciatto-unibo @validatedev