Perspective time series chart automatic y-axis with markers

I manually calculate the min and max using a script and then bind the min and max values to these values. Unfortunately I ran into another issue with the min/max bindings in that the chart doesn't redraw until the mouse goes over it:

There is a suggestion on that post to add and remove a pen to force a redraw. I haven't tried that yet.

I'm hoping that this all gets fixed in a future update from IA.