When logging in to a remote server via sftp. The Authentication Banner shows even after the option "Never show this banner again" is checked. This occurrence is repeatable.
Using WinSCP 5.16 with “Commander” interface on Windows 10 1903.
GUI can sometime be unresponsive with certain actions. I have not found the exact steps to repeat this. One action that was tried was duplicate session after turning on logging. Everything came back to normal after quitting and restarting application.