Calendar: Ensure value type matches for start/end, start/due
With Evolution I manage to upload a VTODO containing
DTSTART;VALUE=DATE:20211125
DUE;TZID=Australia/Eucla:20211127T100000
I just fill time under DUE and no time under START.
According to https://datatracker.ietf.org/doc/html/rfc5545#section-3.8.2.3, if both DTSTART and DUE are present, they must have the same value-type (either both are DATE-TIME or both are VALUE=DATE).
Edited by Milan Crha