Submit text from Entry with a Button

I have an Entry and a button next to it which is wired to take the Entry's text and do something with it. It works fine on Android but I observe strange behavior on iOS. When I tap the Entry the keyboard appears and I start typing. Then when I tap the Button what happens is the keyboard hides but the Button's Clicked handler is not called. If I tap it again the handler is not called. Any suggestions on how to fix this?