Exchange calendar does not grey out events without response

In Calendar Mac apps seems that there is a different behaviours compared with the iPhone or iPad app.

While on iOS I can see events I've not responded to as they are shown in grey, in MacOs there is no difference between this two types of events.

Anyone knows how to have the same behaviour across devices and OS?

For a professional user this is a very important features and the lack of it is one of the reasons why I'm planning to return to outlook clients.