Blank Drop-down Lists
I have an applet (https://www.geogebra.org/m/au7at5kt) which is a random quiz. It has two drop-down lists. The ggb file works fine in my desktop computer. But the same version in GeoGebraTube sometimes returns two blank drop-down lists in which nothing can be chosen (see attached). I run my desktop ggb file many times but the problem does not happen. Please advice.