Text box: Hug content in width triggers the override in the height property to hug contents from fixed height (via variable)

Hi there!

When I change the width property to hug contents of a textbox, the height property is changed to hug contents (from fixed height (via variable) too - why does this apply? Is this by design or buggy behaviour? 
To me it would make sense to support this as the (text) overflow can be absorbed by a horizontally growing text box, no?