Thanx to ASAlishaa for adding the bootstrap cheatsheet to the bootstrap reamde.md I think I may have found where the problem is coming from.

The particular table is given the class table-responsive and table responsive is actually in the CSS.

However the bootstrap cheatsheet suggests that the class should be table-*-responsive with the * being sm, md, lg, or xl. It's possible that the missing clarifier is not letting CSS do its thing.

I will have to test when back at the computer later today.