I have a colleague who uses recurring daily appointments to manage where his engineers are (see screenshot)
If he renames it by typing something after the name, it turns the calendar appointment into an email when it is double clicked on rather than an appointment.
If you were to double click on a non-edited recurrence, it shows the date as being back in the past presumably when it was created. It is not possible to change the date without getting the error that two appointments for this object are not possible on the same day.
What could be causing the behaviour for these two things?