Yes, the fix is specific to lite version, you must update to v85. You can check it in in-app manual changelog.
Btw, If you do not see confirm button, do not worry, tap on the place where it should be. It is there, only is invisible 🙂 That’s the bug in android theme. And orientation change should make re-appear the button too.
Paid version has not yet beta. But this week I will try release full version for limit count of users. I don’t want to release it for all, because goes out the biggest change over all history of mdosbox – SAF.
Or if you want, ping me on email I can share you beta for full version.