Smart playlist based on other playlist

Hi,

I have updated iTunes on Windows to latest version 12.5.5.5. Since the update, I cannot use the option "Playlist is..." in smart playlists. In new smart playlists it just shows 'Music', and for playlists already existing it shows the filter as it was before, but I cannot change it. The drop-down field is grey.

New List:

Existing List:

iTunes is in german, it is called 'Intelligente Wiedergabeliste'. I am not sure, but the filter setting in previous versions was called 'Wiedergabeliste', and now it is 'Playlist'.

All other filters, like 'Title' or 'Artist' are working fine.

Any idea, anyone?

Thanks in advance for your input.

cheers,

Andreas