DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.
The reusable list-picker now exposes a resetKey prop; when it changes, focus resets to the top and any input is cleared. The history picker uses this when you cycle scopes so you don't end up with a stale focused row from the previous scope.
Evidence
Picker resetKey (search for resetKey: in the picker call site).
Strings lifted out of the shipped bundle, so the claim above can be checked against them.