Nemo hangs/fails to load subdirectories on NAS (SMB/GVFS) while other file manager, (Dolphin) work fine

Distribution

Desktop: Cinnamon v: 6.6.7 Distro: Linux Mint 22.3 Zena

Package version

nemo 6.6.3

Frequency

Always

Bug description

Nemo fails to recognise that directories on an SMB share contain sub-folders/files, resulting in the absence of expansion arrows in List View. The folder structure appears "flat" and empty until a folder is manually double-clicked/opened. Additionally, clicking "Refresh" causes any currently expanded folder structure to collapse, as Nemo loses its awareness of the sub-directory tree.

2. Environment
   OS: Kernel: 6.17.0-23-generic arch: x86_64 bits: 64 Desktop: Cinnamon v: 6.6.7 Distro: Linux Mint 22.3 Zena
   Nemo Version: nemo 6.6.3
   Connection: SMB/CIFS mounted via GVFS
   View Mode: List View with "Show folder expanders" enabled.

Steps to reproduce

Navigate to a large directory on an SMB share (e.g., a NAS).

Observe the directory list. Subfolders that contain data do not show an expansion arrow (denoting they are empty).

Manually double-click a subfolder to enter it.

Navigate back to the parent folder; only then does that specific subfolder show an expansion arrow or contents.

Click the Refresh button in Nemo.

Observe that all previously manually-opened structures collapse entirely.

Expected behavior

Nemo should automatically query the sub-directory status (metadata) upon entering a parent directory. Expansion arrows should be visible for all folders containing items, and the expanded state should persist across refreshes.

Actual Result
Nemo treats sub-directories as "empty" (no expansion arrows) until a manual entry is performed. The metadata is not being polled or cached correctly for the tree view. Refreshing the view clears Nemo's temporary "memory" of the directory structure, causing a full collapse.

Additional information

To view the recording of the bug, you can view the video in your browser with this link;
https://pooky-pics.duckdns.org:30672/Nemo_File_Error.mp4

Start by reproducing the issue in Nemo 6.6.3 with an SMB/CIFS share mounted through GVFS, using List View and folder expanders enabled. Inspect how subdirectory status is obtained and how the tree is rebuilt on Refresh; done means populated folders show expansion arrows on entry and expanded state persists after refreshing.