Draft-for-what's-new-page.rest

@@ -67,6 +67,7 @@ MathML Handling
 *   `#1188  <https://github.com/mathjax/MathJax/issues/1188>`__ Fix ``mmultiscripts`` with odd number of post-scripts not rendering correctly.
 *   `#1231  <https://github.com/mathjax/MathJax/issues/1231>`__ Fix <math> element not being treated as an <mrow> for embellished operator spacing.
 *   `#1233  <https://github.com/mathjax/MathJax/issues/1233>`__ Make maligngroup and malignmark be self-closing in MathML input.
+*   `#1238  <https://github.com/mathjax/MathJax/issues/1238>`__ Fix Content MathML extension not handling namespace prefixes.
 
 Fonts
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