0 Minute Duration Events

I usually have a calendar event set as a reminder to do something at a specific time. The duration is set to 0 minutes, for example, 12:15 PM - 12:15 PM. However, in Morgen, the event itself is huge on the calendar and looks like it is a big event that takes a lot of time to complete.

Can there be a visual difference especially for a 0 minute event, possibly make it look like a 1 minute event?