When a user send an calendar invite, he/she enters the invitation and it looks ok. The user receiving the invite gets the Swedish characters messed up (see the example below).
Location: �rsta�ngsv�gen 21C, 1 trappa. Stockholm
This happens both when you enter Swedish characters (ÅÄÖåäö) in the header and in the text as well as the location (shown in the example).
South Brains AB