When zooming in a graph, the Y-axis doesn't change, making the zoom option useless

[funnel20]

Here is a plot of 4 weeks of 1-minute data with 2 Moving Averages:

I'm trying to zoom in to check the pattern of the curves. However, the Y-axis stays at original min-max range, so it's impossible to the individual curves:

Can you please change the behaviour in such a way that the Y-axis dynamically adjusts the min and max values when zooming in?
Thank you.