Re: Not able to switch between tabs when file is transferring .
You can use background transfer queue:
https://winscp.net/eng/docs/transfer_queue
Option to move ongoing foreground transfer to background transfer queue has been added to tracker (it's actually implemented already):
https://winscp.net/tracker/1170
https://winscp.net/eng/docs/transfer_queue
Option to move ongoing foreground transfer to background transfer queue has been added to tracker (it's actually implemented already):
https://winscp.net/tracker/1170