"Markdown couldn't render" error each time Codex wants to tell me something

What version of the Codex App are you using (From “About Codex” dialog)?

26.527.60818

What subscription do you have?

Enterprise

What platform is your computer?

macOS

What issue are you seeing?

Here is the screenshot with the errors

<img width="803" height="609" alt="Image" src="https://github.com/user-attachments/assets/dd90e056-57a4-4ca9-8a06-efe03dfc3b48" />

Codex spams these errors every time I try to use a Jira MCP

What steps can reproduce the bug?

1. Install a random Jira MCP
2. Create a Skill that instructs Codex to do the following during this MCP invocation:

• Before making the tool call, make a progress update with line Tool: <proposed_tool_name>. Payload: <proposed_payload_in_json_format>..
• Make the tool call.
• After making the tool call, make a progress update with line Tool: <called_tool_name>. Result: <tool_result_in_json_format>..

What is the expected behavior?

Codex prints the tool results correctly or at least it is possible to peek at the text that Codex failed to render to figure out what is the problem with the text content.

Additional information

_No response_