Codex app cannot re-authenticate Figma MCP, old credentials are always reused with no way to switch account

Content: When using Figma MCP in the Codex app, I cannot switch to a different Figma account. After uninstalling/reinstalling, disabling/enabling the MCP integration, and reconnecting, the app always loads the same previous credentials (possibly cached). There is no visible option to clear the stored session or choose a different account.

Steps to reproduce:

1. Configure Figma MCP (https://mcp.figma.com/mcp) in Codex.

2. Authenticate with Figma account A.

3. Disable/remove MCP integration (or reinstall Codex).

4. Enable/add Figma MCP again and try to authenticate with account B.

Actual result: Codex keeps using account A credentials automatically; account switch is not possible.

Expected result: I should be able to:

• explicitly sign out from Figma MCP,

• clear cached credentials/session,

• re-authenticate and select a different Figma account.

What I already tried:

• Uninstalling and reinstalling the app

• Turning MCP integration off and on again

• Reconnecting the Figma MCP endpoint

Impact: Blocks working across multiple Figma accounts/teams and makes account management impossible.