WinSCP progress window is modal, so you cannot use other windows of WinSCP while an operation is ongoing. While I understand this is not user friendly, and we would like to change this in long term, it's quite a huge change, so it takes time.

If you are deleting a large number of files via FTP, the buttons in the top-right corner, including the minimize button, become unresponsive. I know you can use the minimize button in the 'Deleting' dialog, but it's kind of counterintuitive, and it took me a while to realize that it was even there.

Is there a reason that the minimize button is disabled during deleting?

Using Windows 8.1 x64