I'd like to add that things are working just fine in 2021 :) I tested on a WSL2 instance on Windows 10 Version 20H2, OS build 19042.804, where the following file operations are working as intended:
- cd to a Win dir (
/mnt/c/users/username/Desktop for the test)
mkdir new dir ==> this gets me two new folders
dd on the new/ folder: folder deleted, but not added to Windows Recycle folder
u key did undo the deletion, restoring the new/ folder along with its contents
touch new_file is working as intended as well
My Windows OS is activated when I do the test.