Artifact share dialog stuck: "shared version" selector greyed out, shows "latest" but sharing fails

Description

Published an HTML artifact via Claude Code, tried enabling "anyone with the link" sharing from the artifact page's share menu.

Got error: "This version can't be shared publicly. Publish a new version or change the shared version, then try again."

The share dialog has a "shared version" field showing "latest", but it's greyed out / not interactive — can't change it to work around the error.

Steps taken to try to resolve, none worked:

• Republishing the same artifact (new version, same file path/URL) — did not resolve it.
• Publishing an entirely new artifact (different file path, brand new URL) — hit the identical error.

Expected behavior

Either the share toggle works on the latest published version, or the version selector in the dialog should be interactive so the shared version can be reselected/reset.