Hi there. I found that if I extrude with the gumball any trimmed edge or in some cases, untrimmed ones, I get a polysurface which for me, is not so useful while modeling.
Digging a little in the advaced options I found the item :
Rhino.Options.AgressiveSplitAtTangents = yes
setting this value to False will work as previous versions.
I know is better to split surfaces into simpler ones for many purposes. but while modeling, is easier to handle the complete surface as one, and if required, run DivideAlongCreases later.
Just in case anyone is interested.
Regards
Diego
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