Use this when the Codex Chrome Extension can list the user's real Chrome tabs with browser.user.openTabs(), but browser.user.claimTab(...) fails with:
Grouping is not supported by tabs in this window.
This is a Chrome control-plane issue, not a login issue. The extension can see the user's profile, but cannot take over the grouped or unsupported window. The reliable recovery is to create a fresh, profile-scoped blank Chrome tab, claim that new tab, and navigate it to the authenticated target site.