Initial value of modelLeaf wasn't set as persistentVal if value was null.
Initial value of modelLeaf wasn't set as persistentVal if value was null.

buchslava/vizabi,Gapminder/vizabi,Gapminder/vizabi,dab2000/vizabi,sergey-filipenko/vizabi,sergey-filipenko/vizabi,vizabi/vizabi,buchslava/vizabi,dab2000/vizabi,dab2000/vizabi,Gapminder/vizabi,buchslava/vizabi,sergey-filipenko/vizabi,vizabi/vizabi