Folder says Empty when it is not empty

[DBooth]

The folder/directory list on the left side of gthumb says "(Empty)" below a folder when that folder has no subdirectories, even though the folder is NOT empty: it contains photos! This is misleading and apt to cause the user -- such as me! -- to accidentally delete photos by deleting a non-empty directory thinking that it is empty.

If the user clicks on the folder/directory name, then normally thumbnails are displayed on the right, so that can help alert the user to the presence of photos in that folder in spite of the fact that it says "(Empty)". However, this is not a reliable enough way to prevent accidental photo deletion, because:

1. gthumb might currently be displaying the contents of a completely different folder. For example, on the attached screenshot on the right the thumbnails of folder 12-11-22 are displayed, but a DIFFERENT folder (2012-11-26) has been right-clicked to pop up its menu in order to delete it, because gthumb (misleadingly) says "(Empty)" under that folder.

2. When a folder contains a LOT of photos, gthumb sometimes takes a long time before displaying any thumbnails, which can give the appearance of the folder being empty!

3. As I previously mentioned, the folder list on the left explicitly says "(Empty)".

Please do not display the word "(Empty)" below a folder name unless that folder really is EMPTY, i.e., it contains no folders or other files. It is dangerously misleading and is not needed.

This was tested on gthumb 3.4.3 on Ubuntu 16.04.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.