Hi,
at my site, drag&drop with your plugin is not working, when I try to move a page or a post into a created folder.
I disabled all plugins, switched from my ENFOLD Theme to TwentyThree standard theme without success.
WP 6.2.2, PHP 8.0, latest plugin
I can see the “move” icon, and I can move THIS icon around the browser window, but I cannot drag&drop a page or a post.
Here a screenshot:
https://postimg.cc/bZ93yh60
Screencast:
https://app.screencast.com/l2mxapOW3pHL0
Developer Tools Firefox:
https://postimg.cc/qNg1Fdv1
I tried it with the latest version of Firefox and Chrome browser at Windows 10 prof. Desktop.
Since plugins are all disabled and theme switched to standard theme I have no idea why drag&drop is not working in your plugin.
By the way: WordPress’ normal drag&drop for example in the widget area is working fine!