FAR plugin hangs when closing editor in local panel

FAR: opening stored WinSCP session in right panel, have a local dir in left panel. Edit a local file with F4, save, press Esc to quit, FAR hangs eating up to 50% of CPU time.

What version of WinSCP plugin and FAR do you use?
Make sure you have the latest version of both.
Problem you are facing is known for beta releases of FAR 1.70. Final 1.70 work without problem. See tracker.