Whatsapp call log disappears automatically from iphone call log

I am XS user and have been facing this issue where my whatsapp call details disappear automatically from phone call log within a couple of hours, but I can see the same call log details under "Calls" tab on whatsapp.

I have checked with people around, and few of them do face this issue while others don't!

Please note: I have also updated my phone to latest ios and whatsapp to latest version but issue still persists.

Can somebody here provide a solution?

Thanks.