File list not updating in a folder-based WAD

[7Soul]

SLADE Version: 3.2.0+
Operating System: Windows

Issue Details:
I'm working with a folder-based WAD, and ever since Slade added the new tree view in 3.2.0, when I export an image from my graphics editor into a folder (and after I confirm the Directory Content Changed prompt) the file doesn't appear in the entries list until I close and open the whole wad.

If I switch back to the default list view, the file appears only after I leave and re-open the folder. These were problems that didn't happen in 3.1.9 and previous versions