Currently, when there are multiple axes, the curves line and axes editor (aka the green tick button) first pops a window to select the axes, with entries such as

title (<matplotlib.axes._subplots.AxesSubplot object at 0x...>) # if there is a title
<matplotlib.axes._subplots.AxesSubplot object at 0x...> # if there is no title

I would suggest switching this to something more user-friendly such as

title
<anonymous axes>

possibly keeping the class name and object id as tooltips.

Thoughts?