Select single axis for interactive zooming?

Dear matplotlib-gurus!,

I wonder if one of you could please help me with the following:

I’ve got a plot with multiple y-axis and I’d like to be able to interactively zoom/pan only a specific axis and not all at the same time. I’m pretty certain that this was possible at some time in the past. All I had to do is to press the number for the axis (e.g. “2” to only then only zoom the second axis) and then panning/zooming would only affect this axis.

I could not find any hints in the list of keyboard shortcuts etc - Does someone know if this is still possible/know if this can be added effectively? Any hints are appreciated!