WinSCP v5.15 - BUG on file transfer

After starting file transfer it is not possible to cancel it. When we click on red "X" we see dialog with four options:
Yes – cancel and close session
No – finish current transfer
Cancel – to continue
Help
After click on No button the transfer is continued (not finished) and the red "X" (on the bottom of the transfer window) change status to "disabled" (not able to click it again).

It looks like a misunderstanding. The "finish current transfer" means to carry on with the transfer of the current file (e.g. to finish it) and cancel the transfer batch only after that.

@martin: If it's true, it is not clear reading info from transfer dialog box :)

Feel free to suggest a better wording.
Though in general, this is an SCP only thing. Why do you even use SCP? Why don't you use SFTP?