Thanks, I have vote for it.
I have found this feature has a little votes.
But I think is a necessary function for people who use this dialog.
Hope more people to vote for it.

Thanks for your post.

This request is being tracked already:
https://winscp.net/tracker/766
You can vote for it there.

The WinSCP is a very good software to copy file from windows to linux.

I usually use "Keeping remote directory up to date" function to keep remote directory same as local directory.

We usually need to confirm the file or folder which we changed is really sync to remote directory. But the dialog's synchronization result display area is too small, so I have to drag the vertical and horizontal scroll bars.

So I suggest the "Keeping remote directory up to date ..." dialog should have "Maximize Button" and can adjust size by drag the edge as many softwares do.

Wish WinSCP better and better.