## Summary When using MDXEditor on a plain text field — enabled via the UI toggle introduced in #3586451 — the editor does not convert Markdown syntax to the corresponding markup. Instead, it escapes the special characters, so the raw input is stored with backslash escapes rather than being interpreted as Markdown. ## Steps to reproduce 1. Enable MDXEditor on a plain text field via the widget settings (see #3586451). 2. In the content editor, enter a heading, unordered list item, or ordered list item using standard Markdown syntax. 3. Save the content and inspect the stored value. ## Expected behaviour The editor converts Markdown syntax to the intended markup (headings, lists, etc.). ## Actual behaviour Markdown special characters are escaped. Examples of what is stored in the source: \# Test \* Unordered list item 1\. Ordered list item ## Additional context Discovered during the review of !1588.