I use version 27 of Finale on a Windows 10 PC. Once of the features missing is support for languages that are RTL (right to left) like Hebrew or Arabic. As a Hebrew speaker, you can make titles, subtitles, and make expressions (with the expression tool) in Hebrew without a problem, and v.27 now doesn't flip the letters when exporting to PDF. However, in the text tool, a button is missing to enable Finale to understand that the text is RTL like Hebrew/Arabic and not LTR, i.e. all the languages using Latin characters.
This tool exists for years in Microsoft Office/Gmail, Google Docs (and I'm sure other software) but is completely absent in Finale. This would be a great addition for an international audience, as well as Hebrew/Arabic speakers around the world, and Jews and Muslims who would like to include religious texts in Finale.