Imported folder(s) not shown in Collections

In darktable 4.4.2 (Windows 11) I imported some files from my NAS. The import process was the same as when importing from a local disk. But when trying to access the imported files from “Collections - Folder”, the folder (and its underlying sub-folder structure) imported from NAS is not visible (i. e. available for selection). The folders imported from local drive(s) are visible, including their sub-folder structure. (screenshot 1).
The images from the network (NAS) are accessible only by typing the exact path directly in the text field (possibly looking it up in the file explorer and copy/pasting into darktable).

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Also, the images on the network (NAS ) are normally accessible through “Collections - Film roll” (screenshot 2).

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Is this normal behaviour? Or am I doing something wrong?

The % at the end (and hit enter after that) should work.
I don’t have windows. Just Linux.

Thank you for your response.
If you look at my screenshot 1, you will see, that I am using the “%” character at the end. This is used as a wildcard character.
My problem however, is not the images not showing in the main panel, but the (network) folder(s) not showing along with the other (local) folders …
An update to screenshot 1 should clarify this …
image