Currently, when you enter value directly in the input field, it is validated against Minimum and Maximum with every key stroke (on Value PropertyChanged).  This leads to some unexpected behavior as the Value is automatically updated to the min or max if it's not in their range. 

When changing the CurrentUICulture to a culture which requires comma as decimal separator (for example, German) - pressing the comma key does not work. You must press period. When pressing period "." -> "," is entered.