Polar Area applet - works MOST of the time. Why not all?
I've been working on this applet. It seems to work most of the time but sometimes crashes. Looking at the lists, sometimes they all collapse and become undefined. Why? I think I've well defined the different constructions making up the lists. Any insights would be much appreciated.
I've attached the file. Here is the applet: https://www.geogebra.org/m/zv8mrzjx