more than 2 stickies bug fix
There was a bug where only the top-leftmost and bottom-rightmost cells were being used to calculate sticky cell sizes.
So when there were:
- 3 columns
- and the 2nd one was larger than the 1st
the 3rd one would falsely assume the 2nd was the same size as 1st.
This is now fixed. Additional playground story now available with resizable columns.