Viber messages notifications violate Do not Disturb

While most apps respect DND, Viber doesn't.

I'm not macOS 11.4 and Viber v15.4, I have DND enabled and Viber notification sounds are heard loud and clear each time I receive a message while on DND.

I understand that it might most likely be Viber's issue and should be addressed by them, but I'm asking here in case someone has found a workaround or something.

For now, what I do is just close the app.

Thanks!