CalDAV finds recurring event outside of search range - caldav

Question

I am trying to retrieve all events (recurring or not) between 2 date-times from a Synology calendar via CalDAV:
curl --user "user:password" -X REPORT --data '<?xml version="1.0" encoding="UTF-8"?>
<C:calendar-query xmlns:C="urn:ietf:params:xml:ns:caldav" xmlns:D="DAV:">
<D:prop>
<C:calendar-data>
<C:expand start="20230207T100000Z" end="20230207T110000Z" />
</C:calendar-data>
</D:prop>
<C:filter>
<C:comp-filter name="VCALENDAR">
<C:comp-filter name="VEVENT">
<C:time-range start="20230207T100000Z" end="20230207T110000Z" />
</C:comp-filter>
</C:comp-filter>
</C:filter>
</C:calendar-query>' https://server/caldav.php/user/calid/
The query above finds the following all day recurring event. The event is recurring weekly before and after the queried date-time, but not within the time-range.
<?xml version="1.0" encoding="utf-8" ?>
<multistatus xmlns="DAV:" xmlns:C="urn:ietf:params:xml:ns:caldav">
<response>
<href>/caldav.php/user/calid/eventid.ics</href>
<propstat>
<prop>
<C:calendar-data>BEGIN:VCALENDAR
CALSCALE:GREGORIAN
PRODID:xxx
VERSION:2.0
BEGIN:VEVENT
CREATED:20230201T210000Z
DTSTAMP:20230201T210000Z
LAST-MODIFIED:20230201T210000Z
SEQUENCE:0
SUMMARY:My Weekly Monday Event
TRANSP:OPAQUE
UID:xxx-xxx-xxx-xxx-xxx
URL;VALUE=URI:
DTSTART;VALUE=DATE:20230206
DURATION:P1D
RECURRENCE-ID;VALUE=DATE:20230206
END:VEVENT
END:VCALENDAR
</C:calendar-data>
</prop>
<status>HTTP/1.1 200 OK</status>
</propstat>
</response>
</multistatus>
Notice I am looking for events on February 7th while the event happens on February 6th. If I change the search range to February 8th the event is no longer included.
Any idea why the event is included in the result? The recurring event does show correctly in Evolution, iOS, and Synology, so I am probably doing something wrong.