Thanks for your feedback.

No folder lock anymore. Nice work, thanks!

Thanks.

This bug has been added to the tracker:
https://winscp.net/tracker/1703

I'm sending you an email with a development version of WinSCP to the address you have used to register on this forum.

Follow this on the "Local" side and it will lock the folder:
1. Create a folder.
2. Open it and copy a file in it.
2. Open the context menu on the file and press System menu.
3. Close the System menu.
4. Go to parent dir and delete the folder.

It should now show the "System Error. Code: 32"

Thanks for your report. Though I cannot reproduce the problem. Would you please describe step-by-step, what exactly are you doing?
Is it a local folder? An internal or an external editor? How are you trying to delete the folder?

If i create a folder, put some files in it that i open with the editor and when i try to delete the folder i can't even if i have closed the editor.
It will bring up this text,

but the problem is that it is WinSCP that is locking the folder and not another program.
The log file will show the same error message as above.

WinSCP 5.13.4
Windows 8.1 64-bit