"What about it?", you might ask
Have a look at the available columns of the Object Designer:
You get it?
Clearly the field still exist.
I could not really make a good enough reason why this field has been removed for the Object Designer? Anyone?
And apparently you are right as MS states: "this field was removed due the inconsistency results on each new compilation."
Makes sense. In mean time I did report it to MS. Let's see what they say.
Just a guess: never look at it for checking if your versions are the same. Recompiling can change the size. Maybe they removed it for this reason.
I'm already using the R2 executables for some time but didn't notice it was missing ... probably because I never look at that field.
Otherwise it would be to easy :)