I have an issue where if I click on controls outside of the Window that contains my MaskedTextInput the LostFocus event doesn't fire. The control is technically working correctly, but I believe what I'm really after is something such as LostKeyboardFocus (but that option doesn't exist in the databinding.
Unfortunately using PropertyChanged event is not an option in my case. Thoughts?
I'm committing the value like so:
Value="{Binding BusinessPostalCode, UpdateSourceTrigger=LostFocus}"