As of recent (past few weeks) it would seem that events are always importing using UTC. I've checked the ics file and it contains the correct TZ info (America/Chicago) but all avents import using UTC. The import sees the correct time for the ics but when it imports, the time is wrong. Here is the ics file in this case, but it's happening for any invite I get from anyone.
BEGIN:VCALENDAR
PRODID:-//Webmail//emailsrvr.com calendar//EN
VERSION:2.0
CALSCALE:GREGORIAN
METHOD:REQUEST
BEGIN:VTIMEZONE
TZID:America/Chicago
BEGIN:DAYLIGHT
TZNAME:CDT
DTSTART:20260308T020000
TZOFFSETFROM:-0600
TZOFFSETTO:-0500
RRULE:FREQ=YEARLY;INTERVAL=1;BYDAY=2SU;BYMONTH=3
END:DAYLIGHT
BEGIN:STANDARD
TZNAME:CST
DTSTART:20261101T020000
TZOFFSETFROM:-0500
TZOFFSETTO:-0600
RRULE:FREQ=YEARLY;INTERVAL=1;BYDAY=1SU;BYMONTH=11
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
UID:353467e0c8bdf37fba66c883353f68bdd220d95d
DTSTART;TZID=America/Chicago:20260106T130000
DTEND;TZID=America/Chicago:20260106T140000
DTSTAMP:20260105T132555Z
CREATED:20260105T132554Z
LAST-MODIFIED:20260105T132554Z
ORGANIZER:MAILTO:REDACTED
ATTENDEE;PARTSTAT=WAITING;CUTYPE=INDIVIDUAL;ROLE=OPT-PARTICIPANT;RSVP=TRUE;
X-NUM-GUESTS=4:MAILTO:REDACTED
ATTENDEE;PARTSTAT=WAITING;CN=REDACTED;CUTYPE=INDIVIDUAL;ROLE=OPT-PAR
TICIPANT;RSVP=TRUE;X-NUM-GUESTS=4:MAILTO:REDACTED
ATTENDEE;PARTSTAT=WAITING;CN=REDACTED;CUTYPE=INDIVIDUAL;ROLE=OPT-PART
ICIPANT;RSVP=TRUE;X-NUM-GUESTS=4:MAILTO:REDACTED
ATTENDEE;PARTSTAT=WAITING;CN=REDACTED;CUTYPE=INDIVIDUAL;ROLE=OPT-PART
ICIPANT;RSVP=TRUE;X-NUM-GUESTS=4:MAILTO:REDACTED
SUMMARY:Xirgo NetSuite Regroup
DESCRIPTION:REDACTED
LOCATION:REDACTED
CLASS:PUBLIC
STATUS:CONFIRMED
TRANSP:OPAQUE
END:VEVENT
END:VCALENDAR
