Thanks for catching that. I hadn’t looked at source.
I hadn’t had my coffee yet - that’s my excuse and I’m sticking with it.
This works better, but is far from being a perfect work-around. i.e. horizontal rule
* item A1
* item A2
* item A3
-----
- item B1
- item B2
- item B3
- item A1
- item A2
- item A3
- item B1
- item B2
- item B3