Whatsapp keep showing "you were added" for old chat groups

Hi everyone,

i have recently switched to a new iphone and had restored my whatsapp chats via icloud backup. However after restore, my chats are full of messages showing that "you were added" for old whatsapp chat group which I am still inside. And whenever I restart my phone, it shows another of the same message again thus bumping up all the old group chats to the top. It does not happen to all group chats but only for those that I am not using frequently.

Is there any way to resolve this matter?