Misleading Y-Axis for EmonCMS.org

Could unused Y-Axis be set to show no scale when feeds are deselected?
I was wondering why the current was showing around -0.8A from the graph above until I realised it related to none existent data having deselected the feeds that appear on the left hand side of the graph.

What you suggest is a valid point but wouldn’t change the fact when traces using the left hand scale are not deselected you could still make the same error, for example if those (currently deselected) traces were actually at around zero and not deselected, you would still see exactly what you see now even after your suggested change was made.

See Indicating left or right x-axis in the graph legends for a related discussion.