Codex changelog RSS feed serves raw Markdown for some entries

What issue are you seeing?

Some Codex changelog feed entries render correctly in feed readers when they are about Codex CLI, but entries about Codex app / docs / general updates can render as raw Markdown instead of formatted content.

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

Example item:

• Title: Expanded Auto-review documentation
• Link: https://developers.openai.com/codex/changelog/#codex-2026-05-11
• Feed metadata shown in Inoreader: 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/body structure and converting the links.

This seems to happen for certain non-CLI changelog feed entries, rather than for Codex CLI-related feed entries.

What steps can reproduce the bug?

1. Subscribe to the Codex changelog RSS feed in a feed reader such as Inoreader: https://developers.openai.com/codex/changelog/rss.xml
2. Open a non-CLI changelog item such as Expanded Auto-review documentation.
3. Observe the article body.

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, matching the behavior seen for Codex CLI-related changelog entries.

What is the expected behavior?

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

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 Inoreader, where the item shows Codex changelog / 2026-05-12 09:14 and the raw Markdown is visible in the article body.

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<img width="240" alt="Screenshot of malformed Codex changelog feed entry in Inoreader" src="https://github.com/user-attachments/assets/caa1ae1e-55dc-43c1-9e28-4744c9913c49" />

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