Creating an event without filling the location field pollutes the event's metadata with an error message
Creating an event in GNOME calendare (I set the event to repeat weekly, for what it's worth), and then exporting the event to a .ics file using Evolution, I notice there is this odd line that shouldn't be here in the .ics file (as hinted by using a diff tool with a normal event .ics):
X-LIC-ERROR;X-LIC-ERRORTYPE=VALUE-PARSE-ERROR:No value for LOCATION
property. Removing entire property: