I was testing the auto-scale y-axis functionality on a zoomable line chart and it works fine when zooming by doing a selection with the mouse, but this functionality does not seem to work when zooming by using the zoom-in/zoom-out buttons of the chart toolbar.
Due to this, the only way to change the axis when zooming out is by resetting the selection (home button on the toolbar).
I hope you can take a look at this, thanks 😄