Copy and pasting folders in ROS, both in Explorer-new and Explorer is an absolute nightmare.
Sometimes the files are just partially copied, other times they are partially moved, and sometimes just hangs the whole system.
It would be a pity to release Explorer-new and that users aren't able to move folders reliable because the ShFileOperation going nuts. After all that's the main objective of a Shell GUI, moving files and folders from here to there.
The overall impact of explorer-new when an user is not able to move files will make them cry.
Pick a folder with several dozen of files, right click Copy, then go to the desired folder, right click Paste.
This is a problem in the shell, because command prompt is able to move folders and files without issues.
However this is a GUI, not a CLI system.