certainly no major issue but:
1- I don’t remember if control+click (Mac) in -Edit instrument names- led to a sub-menu but now white boxes appear.
2- In musical symbols I suppose the selected item should be - … above -.
Thanks for reporting these issues. Dorico shouldn’t allow a context menu to appear in the Edit Instrument Names dialog, and that is indeed a typo in the name of that music symbol. We’ll take care of these little issues in due course.