On Android, attempting to use the select all (Backspace wasn't backspacing, and neither tapping nor directional key input) when choosing the number of days in Free Mode, causes this menu to come up.
I haven't found a way to keep closed my phone keyboard to access the lower half of the menu. Any attempts cause the phone keyboard to immediately pop up again.
There doesn't seem to be a way to close the menu from the top half, either.