On both mobile and desktop the web interface of Proton Calendar allows the Description field of a calendar entry to have multiple lines. In the iOS version of the Proton Calendar app the Return button does not appear on the on-screen keyboard when editing the Description, preventing the user from entering line breaks. The iOS app does allow a user to view multi-line text that has been entered using the web interface. It would be very useful for the iOS app to allow a user to enter text with line breaks into the Description field, such as when including a meeting agenda or when using the calendar as a diary.