When there is an incoming call, the notification is inconsistent and sometimes very hard to find to be able to answer a call.
Sometimes I get an popup option with the option to answer or reject and sometimes this is not displayed at all. When it is not displayed I have found I have to work out who is calling me and then view the Chat for that person and there is then a 'Join' option at the top of the screen. This is very frustrating and means I sometimes miss calls.
This is on a Macbook Catalina 10.15.7 and using the desktop Teams client.