XnView: MP 0.99.7 - 64 bit
OS: Windows 11/64bit
This file-handling procedure has worked in older versions, then it stopped working. It has been reported in previous versions and marked as "fixed." It doesn't work in this version. WIN normal behavior is that CTRL-left mouse button drag COPIES files to destination folder. Now using Shift or CTRL or no helper key at all just moves the selected file.
Effect: WIN users are familiar with the GUI and an app which ignores one of the most common GUI file-handling procedures is not well designed.
To reproduce:
1. hold down CTRL
2. press left mouse button with cursor over desired file
3. holding CTRL, drag file to target folder
4. expected behavior: file will be copied
5. Xnview behavior: file is moved
Actual behaviour (bug): file is moved, not copied

Expected behaviour: file is copied