customfield_orderby with field of type date

Hi,

I am using WordPress 5.7 in combination with version 0.83.1 of your plugin.

My problem: when I use attribute customfield_orderby in combination with a custom field of type date, it uses string sort. The problem is, that I need to sort articles based on a publication date (NOT the date the article was published but a custom field containing a publication date of some newsletter article, which differs of course) and it basically finds this order:

1. 01.04.2020
2. 01.07.2003
3. 02.11.1998
4. 05.03.2017

Obviously that is not correct with respect to the date.
I searched for some flag indicating it shall interpret that field as a date but was not able to make it work.

My current test tag:
[catlist id=2? template=articles thumbnail=yes force_thumbnail=yes thumbnail_class=press_thmb customfield_orderby=Publizierungsdatum order=asc numberposts=1000]

Do you have a hint here or could add an update for “date” types?

Thank’s a lot