Clicking on directory name vs. expander in collection panel should have different effects

Is there an existing issue for this?

• I checked and did not find my issue in the already reported ones

Describe the bug

The action of double clicking on a directory name in the "folder" view of the "collections" panel has two side effects:

1. It populates the lighttable with all the images in the folder (desired)
2. If the folder contains one or more subfolders, it will also collapse/expand the folder (unexpected)

Point (2.) is unexpected because subdirectories already have a "|>" indicator on their left that can be clicked to expand/collapse.

The opposite is also true. If one clicks on the expander to list the subfolders does not necessarily want all the images in the parent folder (which may be huge) to be displayed in the lightroom.

Steps to reproduce

1. Go to "collections" view
2. Select "folder" from the list of filters
3. Double click on a folder which contains at least one subfolder to view all the images in it

Expected behavior

The images in the selected folder should be loaded in the lighttable and the double clicked folder should not change its collapsed/expanded state

Logfile | Screenshot | Screencast

No response

Commit

No response

Where did you obtain darktable from?

darktable.org / GitHub release

darktable version

5.2.1

What OS are you using?

Mac

What is the version of your OS?

MacOS Tahoe 26.0.1

Describe your system

No response

Are you using OpenCL GPU in darktable?

Yes

If yes, what is the GPU card and driver?

M4 pro

Please provide additional context if applicable. You can attach files too, but might need to rename to .txt or .zip

No response

Start by reproducing the behavior in darktable's Collections panel with the Folder filter and a folder containing subfolders. Trace the handlers for double-clicking a directory name and clicking the expander; done means each action has only its intended effect, with the folder's images loaded independently from its expanded or collapsed state.