SubD geometry in a block does not toggle from flat to smooth or vice versa, unless…
The only way to toggle the SubD inside the block is to open the block and toggle.
When a block is open, both the block SubD and the SubD which is not in the block toggle from flat to smooth and back.
21_09_09_two_subd_one_is_a_block.3dm (267.7 KB)
