This might be a more general Markdown rendering problem. Using your example in Ghostwriter, for instance, also renders “badly” (by double-spacing the last list items):
Thanks - should probably been more clear of my concern here…
The issue wasn’t so much the way that it renders with the double line spacing - I understand the spacing when you leave a gap between the two lists.
The issue is that the first checkbox list has extra indentation compared with the other example. If you look the checkbox list is indented as if it were a second level list.
I am very sorry, but I honestly think that these loose lists here are not what a user wants. He most obviously wanted to end one list and start another. I have no idea why it is treated as something else and I am willing to try to understand it by inhaling the fumes of burning Markdown manual. I believe that it is quite clear that I am upset with this behavior (although I appreciate you coming in every topic about them and naming the enemy).