Steps to replicate the issue (include links if applicable):

• Set math formatting mode to MathML
• Use Safari v. 15.6.1 running on MacOS 10.15.7
• Enter the set of formula with blank lines between

<math forcemathmode="native">\cfrac{x}{1 + \cfrac{\cancel{y}}{\cancel{y}}} = \cfrac{x}{2}</math>

<math forcemathmode="native">\begin{array}{lcr}
 z & = & a \\
 f(x,y,z) & = & x + y + z
\end{array}</math>

What happens?:

Rendered as

With both maths formula on the same line, and little horizontal space between them.

What should have happened instead?:

Rendered using MathML on Chrome on Windows

With formula on separate lines.

Software version (on Special:Version page; skip for WMF-hosted wikis like Wikipedia):

Other information (browser name/version, screenshots, etc.):

Safari v. 15.6.1 running on MacOS 10.15.7,