Drag-drop doesn't work after dropped connection

WinSCP 5.17.10 build 11087 on Windows 10 64-bit. Commander view.

Connect to a remote site and then make the connection drop (for example, disconnect from your VPN). You will see a popup with the red error icon. Click the Reconnect button. Now try to drag a file from an Explorer folder onto the WinSCP remote directory. It doesn't seem to work properly: the source Explorer window hangs for a while.

Thanks for your report. Though I cannot reproduce the problem. Can you provide more detailed instructions for reproducing the problem?

So it does not work at all after reconnect? Or does it work, but "source Explorer window hangs for a while"?