Copying (parts of) image in XnView causes KDE to freeze after closing XnView

[Konzertheld]

Hi,

I encounter the following reproducible behaviour that I think is caused by something in XnView MP:

When I open an image with XnView, select a part of that image and copy it (Ctrl + C), then close XnView, KDE Plasma freezes for a couple seconds. Usually I am in Dolphin in a folder with image files and I immediately notice I can't select another file. Plasma always unfreezes after a couple seconds.

This happens in 100% of the cases where I copied something, sometimes also when I just used XnView to look at images. Therefore I am not sure if it is related to the clipboard. However, the content of the clipboard is gone after I closed XnView.

The images are of normal size (less than 5 MB JPG).

I cannot reproduce this behaviour on the same system with another image viewer so I guess XnView does something or doesn't do something that is causing this, but unfortunately, I don't really know what to check. I'm happy to help figure it out if you have any suggestions where to investigate and I appreciate any help.

This is XnViewMP 1.8.6 on SteamOS, which is based on Arch Linux.

[xnview]

if you don't close XnView, no problem?

[Konzertheld]

Correct.

It also doesn't matter how much time passes after the copying. The freezing always happens immediately after closing XnView / while XnView is closing.

[Konzertheld]

Addition: There is another circumstance that I can reproduce that might help.

1. Open XnView with an image and copy something
2. Open a second XnView with another image
3. Close the second XnView
4. KDE Plasma will freeze
5. Close the first XnView where you copied something
6. The freeze will not occur again

[xnview]

i'm not able to reproduce on KDE plasma 6.1.5