I just switched to a new phone, so this may be related. What happens is when I select an option from the pull down menu, the click also gets handled by the underlying page.
For example, if I choose UI Translation from the menu, it also hits the Study button from my first schedule, starting a quiz. This is repeatable.
It's an iOS/Flutter issue. Unfortunately, all I can do is wait until the Flutter developers update the code (as iOS made a bit of a radical internal change in one of the more recent iOS versions).
