I don't use the charactermancer, I prefer editing the sheet directly and upon further testing, the only one that automatically adds the initial saving throw proficiencies is druid. Using the drop down menu, if you click through each one, druid is the only one that auto checks the saving throw proficiencies. Also, I went back through the webpages and the only 5th edition classes that show their starting saving throw proficiencies are barbarian and bard, the rest have that information missing. To explain the images below, the one on the left in each screenshot is a sheet I edited directly and only clicked the drop down menu to make it "druid" while the right one in each screenshot I did the same and made it "rogue". During my testing, not only did I find that the saving throws did not properly check themselves, the correct hit die for other classes didn't apply either, only applying to the druid. I had my girlfriend test on her computer with another browser and she replicated these results. The top screenshot shows the saving throws, the bottom screenshot shows the hit die.