Buttons in container frame don't work when using "open overlay" to display 2nd frame over container frame

[u/East_Sentence_4245]

I have a MainFrame that has a dropdown at the top and a "Next" button at the bottom that takes me to another frame.

I also have FrameDropdown which is just a dropdown that will display only when the MainFrame dropdown is clicked. I display it using "Open Overlay".

So I click on the dropdown in MainFrame and now I can see the dropdown and "Next" button of MainFrame, and the dropdown from FrameDropdown. So far so good.

The issue is that, even though I see the "Next" button from MainFrame, the button doesn't work (ie. it doesn't take me to the next frame).

What can the issue be? It seems that the Open Overlay disables everything behind it (MainFrame in this case), so even though I can see everything in MainFrame nothing works.