Hello,
we don’t use the iCal importer.
All events are insert manually in the event calendar pro of wordpress. The representation in the frontend of wordpress is correct.
The problem are only the export files. We use a calendar-feed (https://www.clg-laupheim.de/events/?ical=1&year-feed ) to export the events into other systems as moodle. Some users use other export files like the regular month export https://www.clg-laupheim.de/events/?ical=1&tribe_display=month
In all this cases most events are correctly exported. Only events which take several days and are all day long (without start an end time) are wrong.
Grischa