I tried to add an event to my calendar, but clicking “done” doesn’t do anything. When I tried to do the same on Safari, there’s a button labeled “add to calendar” that actually adds the event. I tried to replicate this on my iPad to see if it has to do with screen dimensions, but while the lower edge of the screen is clear, there’s no option to add to the calendar. Images attached are of adding event on Firefox, then safari on iOS, then adding event on Firefox using iPadOS in both horizontal and vertical orientations.