During transfer it shows 00:00:00 all the time.
And After transfer it is just empty.
The Help says: "Empty for waiting transfers." But the value is <empty> after the transfer has already finished. I thought it should show something like 00:00:03 if the transferred took 3 seconds.
The Help also says: "Estimated time till end of transfer, if known. Total time already spent on transfer, otherwise."
This is mixing two different parameters of the transfer. ETA is one thing, maybe should be a separate column. "Elapsed" is another. And what does it mean "if known"? The user doesn't know "if known" (WinSCP knows), so the user doesn't know which value is displayed.
:idea: Suggestion: split into two columns:
1) ETA - estimated time, if known/available. After transfer, it should become empty.
2) Elapsed - during transfer should show the time passed since beginning of transfer. After finish, it should keep the value of total time it took to transfer the time.