WinSCP 5.19.6 (Build 12002 2022-02-22) this is two much for me :D
Windows 2012 R2
SCP to Serv-U Solarwinds FTP
The filenames are visible when doing a search using Find Files as well as on the source.
It is also able to pick transfers to partial files, they are just not showing in the GUI pane on the right.