1. Adding bibles to Version list from the menu deletes the original versions even after adding a comma or pressing the blue arrow to confirm an entry. The only way was to manually type the version abbreviations.
2. Alt-Enter works fine for an initially empty Reference box but it is difficult to clear a non-empty box. Both it and Back Space appear to do the job but it returns when focus is moved, even after pressing the little blue arrow. A similar level of difficulty applies to the Reference box in the Add menu but at least it is hidden.