Hi @Lucas Werkmeister:,
Apparently, the tool doesn't understand lang subtag. So when editing an existing lexemes with such tag, it seems a bit lost. See for instance tavañjer (L628403) (Special:Diff/1962462516) where it removed the F2 and merged it with F1. Not sure how common are such cases but I least I want to warn about this.
Bonus general question, how can I have the F2 back? if I add a new form, it would be F14 and not F2, right?
Cheers,