[Bug] Section in Grasshopper isn't correct when the variable changes

I make a T-shape section in Aqua and import it into Grashhopper.
This is the section shown in Aqua report, which is correct.

The width of the web has been associated with a variable BW, the default BW=0.2
This is the section shown in Grasshopper which is correct too.

If I change BW to 0.3
it’s still correct in Aqua report

But section is NOT correct in Grasshopper,

AQUA.dat (1.1 KB)