Bug ? ONAIR Status Of Others

[vk6mo]

Environment: LM21.1
QSSTV: 9.5.8
This may be a user error, as I've not ever seen it work and I'm not sure if I'm using it correctly.
Situation:
Qsstv outputs ONAIR status which can be viewed directly in the remote ftp server directory.
Others can see the status correctly.
However, qsstv does not show ONAIR status of others.
I'm assuming the way to get the onair status is just to push the button "Who is On?" and the list should appear in the box immediately below.

Is this a known bug?
Has it been fixed already?
Is there something else (ie not qsstv) that causes this issue?
If this is an outstanding issue, Im happy to have a look at it once I get my development builds working