When, either initially or after changing class, you click more than once on the “Select {class name}” before the page refreshes and shows you the actual class you selected (because the UI might be slow, you might think it didn’t register the click) then you’ve got entries duplicated, or even triplicated…
Thanks for reporting. Yes, this is a result of clicking multiple times on the ‘select class’ button in the builder, causing those options to duplicate while the class options load. We’re working on finding a fix.
There seems to be some kind of similar behaviour in the Character Sheet, I sometimes have Spells, Equipment, Feats etc duplicated more than once. I can’tg replicate consistently though.