Event tiles in the calendar always cut off at the end of the first line, no matter how long the event is. A 15-minute event and a 3-hour event get the same single line of text, which is about 20 usable characters.

For anything longer than 30 minutes there is plenty of vertical space in the tile that goes unused. That space could hold a second line, and more lines for longer events, scaling with the duration. Outlook has always worked this way and it makes the week view genuinely readable at a glance.

With only ~20 characters visible, we currently have to open events one by one just to find out what they are, which defeats the purpose of the calendar overview.