I met this issue a while ago and I took the following steps:
I have found other users reporting the same, specifically for Viber, not only on Ubuntu 24.04.4 LTS but other distros as well, so it is a confirmed workaround.
➡️ Forum thread: [SOLVED] LM22: 2x menu-launcher for Viber...
> cd /usr/share/applications
> ls -l
com.viber.Viber.desktop -> viber.desktop
> rm com.viber.Viber.desktop