This website contains age-restricted materials including nudity and explicit depictions of sexual activity.
By entering, you affirm that you are at least 18 years of age or the age of majority in the jurisdiction you are accessing the website from and you consent to viewing sexually explicit content.
Seems like they wanted the web and app version of outlook to work identically. Some things don’t work on the web though, so they decided to cut features on the app until they were the same as web. It’s just such a corporate move.