Fixed. Go get 2017.012:
https://github.com/roaminggamer/SSK2/
I also added a new validation test to test the filled rect versions of 2, 3, and 4 state buttons side-by-side.
Turns out the code was all there, just missing a logic check.
Thanks again and sorry for causing trouble,
Works as documented now - unselected, selected, and toggled.
No need to apologize. I thought I’d fixed it and I was wrong. I’m glad it is good to go now.