It may look odd, but I think the format is intentional. The outer list is an ordered sequence of events, where the order matters. The inner bullet list states 3 properties of the copy behavior, but there is no relative sequencing between them, so the associated para-number for the bullet is not semantically useful, but provides a way to identify those sentences in the standard.

Maybe we want to give numbered lists the same "number-in-margin" treatment as bulleted lists?

For reference, here's a screenshot:

Another solution could be to keep the styling as-is, but change the numbers for the nested items to (16.2.1), (16.2.2), and (16.2.3), to reflect that they are nested in item 2 of para 16.

Decision: add "then," to the start of the second, third, and fourth item, and convert to bullets.

[cmplx.over]: convert to bullets
[streambuf.virt.put]: p5 should be converted to bullets, first bullet is missing a period.

In general: where the numbers are not semantically important (eg, not for phases of translation), convert to bullets. Use words, not numbering, to indicate sequencing.

Fixed at ee8aa52