Thank you for your post.
I can replicate the issue, and I have sent your post along with my findings to our Development and Testing departments for review. When I receive any feedback, I will let you know.
You've probably figured this out by now. If more than one window in a file or more than one file is open, tapping the menubar will display them all and allow you to switch to another like the "Windows" menu item did in FM Go 13.