2 functions disappear
win10, classic 5.0.637
input 3 functions: sin(x), 2^x, ln(x)， save it, and close the window.
double click the file and re-open the file, only 1 function left in the 2-D view. the other 2 functions disapper.
but, if i use geogebra menu File--Open Recent file, open it , it does have 3 functions!