Two different formula with the same number have different size

[papk...@gmail.com]

Hello, I have some issue with size of two different formula (I have added image)

source:

<math>

    <mrow>
        <mn>3</mn>
    </mrow>
</math>
<math>
    <mrow>
        <mn>3</mn>
        <mtext>,</mtext>
    </mrow>
</math>

presentation:

<svg xmlns:xlink="http://www.w3.org/1999/xlink" width="1.162ex" height="2.102ex" viewBox="0 -783 500.5 905.2" role="img" focusable="false" style="vertical-align: -0.284ex;" aria-hidden="true">
    <g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)">
        <use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#MJMAIN-33" x="0" y="0"></use>
    </g>
</svg>

<svg xmlns:xlink="http://www.w3.org/1999/xlink" width="1.809ex" height="2.521ex" viewBox="0 -783 779 1085.4" role="img" focusable="false" style="vertical-align: -0.702ex;" aria-hidden="true">
    <g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)">
        <use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#MJMAIN-33" x="0" y="0"></use>
        <use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#MJMAIN-2C" x="500" y="0"></use>
    </g>
</svg>

[Peter Krautzberger]

Hi,

You might want to describe the problem you're having and add a live sample exhibiting it in context. An isolated PNG is not enough to help, I'm afraid.

Regards,
Peter.

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[papk...@gmail.com]

Thanks for your response!

it is whole example

It happances if you will change zoom of browser (sometimes everything is aligned sometimes not), I think that it is svg issue because here all in 'ex'

How variant for fix It issue I can add to the first formula 'mphantom' element with all content from the second formula, 

something like:

,

<math>

    <mrow>
        <mn>3</mn>

        <mphantom><mpadded width='0px'><mn>1</mn><mtext>,</mtext></mpadded></mphantom>
    </mrow>
</math>