The CEO-runtime model dropdown (and the team-model pool) collapsed the
instant a user clicked to open it whenever the app received a background
snapshot refresh. Root cause:
useEffect(executionReadyConnectors, ...)
→ loadModels() loads catalog for every ready connector
→ setConnectorModelsById(Object.fromEntries(entries))
— always a brand-new object reference, even if the catalog
returned from the IPC is byte-identical to the previous load
→ connectorModels useMemo picks up a new reference
→ modelOptions useMemo picks up a new reference
→ <Select> re-renders its options children
→ Chromium's native <select> treats DOM mutation of <option>
children as "popup stale" and closes the dropdown.
Because snapshot refreshes fire on every domain-changed event
(credentials-changed, run-status, heartbeat-status, etc.), the user
effectively could not hold the dropdown open long enough to pick a
model.
Fix: structurally compare the freshly-loaded catalog against the
previous state and bail out of setState when the shape is identical
(same connector ids, same per-connector model lists in order, same
id/label/enabled flags). Same guard on the error-path reset so an
already-empty map does not trigger a re-render either.
typecheck 0 / lint 0-0 / test:unit 508/508 / build 0-0.
ZacharyZhang-NY
7fc707ab8c