Ordering does not sort, but filter - why?

[gba]

Hi all!

VM 3.8.9 10580
Joomla!3.10.8
Tested with vmbeez3 3.4.2 template

I have configured following sort order options: 'Ordering, Name' and 'Featured Product'.
There are two products set "featured".
When the user wants to sort by 'Featured Product', VM does not show the "featured" products first and the other after (as expected), but it shows the two features products, only, and the other products no more instead.

What is wrong with my configuration?

Thank you very much in advance for any useful hint!

Kind regards,
Gerald

[Milbo]

Maybe fixed in vm4.0.2