For example, if I click on Font Size when it says 10 pt, it should automatically drop the 'pt' before I start typing. Retyping the value is always faster than trying to move the insertion point and highlighting only the numbers to avoid getting an "invalid value" message because you accidentally typed over the 'p' in 'pt'. Else you have to always double-click the field, but sometimes that fails to highlight everything for one reason or another. There's no real use case for leaving the unit in the box when entering a value I've ever encountered.