Web applet adds a ton of variables to global scope
I've come across a GeoGebra material which seems to fill up the global scope with about 8000 variables with minified names: https://www.geogebra.org/m/y4aFfH8q
Since I noticed this problem because it broke the Numbas question which embeds it, I assume that this has only started happening recently. The question was originally written about 4 months ago.
This doesn't happen with other materials I've looked at, picking randomly from the geogebratube front page, but does happen for this material in both Chrome and Firefox.
Any idea what's causing this?