10.10.5: Deletion of folders does not work

[Paulo88]

XnView: MP 10.10.5 - 64 bit
OS: Linux (Fedora 43 KDE) 64bit

==================================
Short description of the problem
==================================
Folders cannot be deleted, does not matter if it is empty or not.
When trying to delete a folder the confirmation box appears, but after clicking "Yes" the folder is not deleted.
Files, however can be deleted, this only happens with folders.

==================================
Further infos and things I tried
==================================
Permissions should not be an issue as a new test-folder in my home-folder has the same problem.
Delete is working in Dolphin and also using another appimage "Double commander".

I already removed the xnview.ini and tried different versions of XNView MP back to 1.4.5, all show this behavior.
The problem occurred at around January/February 2026, where I probably installed Fedora updates.

I set up a new virtual Fedora 43 and tried XNViewMP there, it shows the same behavior.
So it seems to be broken even in a new installation of Fedora 43.

==================================
Effect: Deletion of folder is not possible
==================================

To reproduce:
1. Select Folder to be deleted
2. Right-Click and Delete OR Press "Del" on keyboard
3. Confirm the deletion of the folder in the message prompt
4. Folder is not deleted
Actual behavior (bug): Folder is not deleted

Expected behavior: Folder should be deleted

[xnview]

you delete folder from Folder treeview or from thumbnail view?

[Paulo88]

I tried both, if I delete in the Thumbnail-view the folder nothing happens.
If I try to delete in the treeview the folder disappears from the treeview, but is not really deleted as it stays in the thumbnailview and selecting refresh it reappears.

I recorded a small video of the problem from the newly installed virtual Fedora installation.

2026-04-19 15-08-46.mp4

If you want me to try anything else, just let me know.