PS Fixed. I should have filed this as a bug report. Sorry!
When I am assembling notes into a larger narrative to copy them elsewhere, the front matter should be included.
I am assembling a longer text from pieces like so:
![[other-thing]] currently renders the yaml frontmatter before rendering the rest, in a box that gets copied when I take it elsewhere.
I could reference an anchor like ![[other-thing#some title]] but that would also bring over the heading that created the anchor and add clutter on both sides.