Translations not publishing when original moves from draft to published

I can mark an originating post as being 'Ready for translation' before it is published. When I 'save draft', this creates a job in the Translation section.

I can mark my translation as 'Complete' before the original is published.

When I then go to publish the original, I'm expecting the translation to become published too. But it doesn't. The post doesn't appear on a 'latest posts' view, and any Babble-generated switcher links show `%whatever%` variables.

If I go back into the translation, and immediately click Update again, the translation then becomes available, and the switcher links are correct.

Everything works fine if:
- the original is published before a translation is completed: original is already available, translation becomes available when marked complete; or
- the original is set for scheduled publication: in which case both original and translation become available at the appointed time.

Reproduce the workflow in WordPress and Babble: mark the original ready for translation, complete the translation, then publish the original. Trace the translation and switcher state during that transition; done means the translation appears in latest-posts views and generated switcher links contain no placeholder variables without a second update.

Written by the indexing model from the issue text.