Error with \begin{equation} xxx \end{equation}

[phoenixsfly]

.. math::

    \begin{equation}
    a=b
    \end{equation}

Katex render result:

mathjax render result:

mathjax set with mathjax3_config = {'tex': {'tags': 'ams'}}

It seems that formulas and numbers were overlapped in Katex

[hagenw]

Thanks for reporting, I will have a look into it.

Could you test, if it works when using labels, e.g.

.. math::
    :label: my-equation

    a = b

as shown at https://sphinxcontrib-katex.readthedocs.io/en/v0.9.10/examples.html#equation-numbers.

[phoenixsfly]

I added the following cases.
The results show that the second use case（:label: my-equation ） rendering is correct, but as long as \begin{xxx} \end{xxx} is used, the problem of formula and number overlap will occur.

.. math::

    \begin{equation}
    a=c
    \end{equation}


.. math::
    :label: my-equation

    a=b

.. math::

    \begin{align}
        a &= b \\
        b &= c
    \end{align}