The dropdown populating means the /coauthors/v1/search/ endpoint is fine and the search-as-you-type wiring works. The “selecting does nothing” symptom points at the onChange handler in src/components/co-authors/index.jsx:104-112, which calls addItemByValue() and then updateAuthors(). If either silently fails, you’d see exactly this — search works, selection no-ops.
Most plausible causes, in rough order of likelihood:
- Stale bundled JS cached by CDN/browser that doesn’t match the current REST API shape (the
coauthorTermIds/buildCoauthorTermIds rework in a recent PR changed the entity store contract; old JS would break here silently).
- A JS error mid-onChange that’s only visible in the console.
- A third-party plugin filtering the REST search response to omit
termId or userNicename, which would make addItemByValue find nothing and silently no-op.
@egonzaleztest Please can you share your WP version, the full console error with stack trace, the active plugins, and whether your site has a CDN and/or object cache?