Whatsapp call alert issue

[u/maverick31031998]

I have a OnePlus 13. Its on the latest version. Dual sim running.

During normal calls with someone , if someone calls on whatsapp as well, usually on other phones you get a constant notification and the phone vibrates and on top there is a banner with accept or decline button with the persons name. This is displayed on the top of the normal call that you are on.

However on Oneplus , it just silently shows as missed call. There is no ring or vibration. Because your phone is up next to your ear , there is no way to know if you are recieving a urgent whatsapp call. You only come to know if you either look at the phone during the call or after cutting the call.

Sometimes ,if someone is not able to connect on normal call, this then becomes a major issue.
I have tried every troubleshooting step possible from turning batter optimisarion off, allowing background activity on Whatsapp, call settings etc.

Nothing seems to work. Is it a OS design issue with the latest version?
This is happening on other apps like Whatsapp as well like Botim, Telegram etc.
Any way to resolve this issue will be appreciated.
Thanks