Steps to replicate the issue (include links if applicable):
- Set maths rendering mode to MathML
- Add a page with \begin{align} environment and font sizes specified via \\[6pt]
For example
<math display="block">\begin{align}
\frac{dy}{du} &= f'(u) = e^u, \\[6pt]
\frac{du}{dv} &= g'(v) = \cos v, \\[6pt]
\frac{dv}{dx} &= h'(x) = 2x.
\end{align}</math>
Used on https://en.wikipedia.org/w/index.php?title=Chain_rule&oldid=1246397644#Composites_of_more_than_two_functions
What happens?:
The actual font size annotations are shown
What should have happened instead?:
The lines should be displayed using a smaller font size
Software version (on Special:Version page; skip for WMF-hosted wikis like Wikipedia):
Other information (browser name/version, screenshots, etc.):
Chrome 128
