Prompt for Password

While testing WinSCP before deploying it in our company, I noted that there is no prompt for the proxy password in case the saved password is wrong. It just tries again over and over. This certainly would generate many support requests in our company (since we ask users to change their password on a monthly base).
Is there a plan to implement the connection function in a way, that a prompt for the proxy user and password appears in case the connection with the saved user and password can not be established? (Similar to the case where the FTP user or password are wrong...)

Btw.: I really appreciate the work you guys did on WinSCP. I definitely
prefer it over other FTP clients...

This depends on PuTTY implementing the function:
https://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/proxy-password-prompt.html

This issue is being tracked here:
https://winscp.net/tracker/468