Hello, The ‘Exclude all day events’ check is not working correct. Looking at the code this has something to do with the milliseconds from the Date::now() function in \lib\widget\calendar.php (ln 398).
A work around is using
$startOfDay = Date::parse(‘today’);
instead of
$startOfDay = Date::now()->startOfDay();
But this isn’t a solution for more than one day.