Where are the flat pattern bounding box sizes?

Hi,

Some customers first draw a solid model, then turn it into sheet metal.
I cannot reach the flat pattern bounding box.
Is this normal, or is it my fault?

Important!

This applies only to parts that have been converted from solid to sheet metal.

Everything is normal in drawings started as sheet metal.

--This should be the image.--

Bounding box length/width 

--this is my image--

Bounding box length/width 

This is an alternative but long way, it should not be so.

I'm open to any suggestions.

Thank you in advance for your help.

SolidworksSheet Metal