Codex changelog feed renders some general updates as raw Markdown

[xc1427]

What issue are you seeing?

The Codex changelog feed can render general functional/documentation updates as raw Markdown instead of formatted content.

Feed XML URL: https://developers.openai.com/codex/changelog/rss.xml

Example seen in the feed item:

• Title: Expanded Auto-review documentation
• Feed metadata: Codex changelog / 2026-05-12 09:14

In the article body, the Markdown heading and links appear inline/raw, for example the body starts with # Expanded Auto-review documentation Added a dedicated [Auto-review](/codex/concepts/sandboxing/auto-review) ... instead of rendering the heading separately and converting the links.

This seems to happen when the changelog item is a general functional/documentation update rather than a Codex CLI new-feature entry.

What steps can reproduce the bug?

1. Open the Codex changelog feed XML: https://developers.openai.com/codex/changelog/rss.xml
2. Open a general functional/documentation update item. The example I saw is Expanded Auto-review documentation from 2026-05-12 09:14.
3. Observe the article body in a feed reader.

Actual result: the article content is malformed. The Markdown heading and inline links are shown as raw text, and the heading/body are collapsed into one paragraph.

Expected result: the feed entry should render Markdown consistently, with the title/heading separated from the body and links rendered as links.

What is the expected behavior?

Codex changelog feed entries should render Markdown consistently regardless of the type of update.

For this item, I would expect:

• # Expanded Auto-review documentation to render as a heading or be omitted if the UI already uses the item title as the heading
• [Auto-review](/codex/concepts/sandboxing/auto-review) and the other doc references to render as clickable links
• the body text to preserve paragraph structure instead of becoming one malformed paragraph

Additional information

Before filing, I searched for similar existing issues in openai/codex using queries including changelog feed, Expanded Auto-review documentation, Auto-review documentation feed, and malformed changelog codex. I did not find a matching issue for this specific feed rendering problem.

The screenshot is from a feed reader view where the item shows Codex changelog / 2026-05-12 09:14 and the raw Markdown is visible in the article body.

Screenshot