Still seems bugged for me in 1.2.2, on both Chrome and Firefox. No response to clicking the "Call Infinite Faces" button.
That is... strange. I am revisiting this bug now. Thank you for letting me know.
I will note that i also had the bug of it not working, but it worked as soon as i imported a save. The same imported save didn't have the button work before the update so part of the problem was fixed, just not all of it.
Didn't do anything different today really, but the button functioned.
