Poor subd fill result

Rhino
,
1

GIF2

I would have expected the command to create two new rectangular faces…

fill.3dm (2.2 MB)

(Also, not sure why this simple example is 2.2mb… I did a purge already.)

2

I get the same result, after removing all the creases fill works but doesn’t seem to give a result id expect with the automatic option.

Fill
Fill949×703 37 KB

Bridge will fill the hole with no problem

3

Thanks for reporting, I’ve logged it to our development engineer for confirmation.
You can use the Bridge to fix this hole.