xml:space="preserve" not work

[similing4]

When I create a Text dom which start with spaces in svg with 'xml:space="preserve"' setting, the space not works:
SVG file opened in chrome:

The png rendered svg:

I have three space before text "Cap" not works.

<svg id="图层_1" data-name="图层 1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 887.16 742.65">
    <title>1</title>
    <text transform="matrix(0.87, -0.64, 0.63, 0.78, 293.63, 552.1)" style="isolation:isolate;font-size:14.495826663827536px;font-family:Candelia;" xml:space="preserve">   </text>
    <text transform="matrix(0.47, -0.34, 0.59, 0.81, 334.48, 527.6)" style="isolation:isolate;font-size:22.870631244248315px;font-family:Candelia;" xml:space="preserve">   Cap</text>
    <text transform="matrix(0.54, -0.46, 0.65, 0.76, 388.75, 476.74)" style="isolation:isolate;font-size:19.589246204921178px;font-family:Candelia;" xml:space="preserve">t</text>
    <g style="isolation:isolate">
        <text transform="matrix(0.63, -0.25, 0.37, 0.93, 397.97, 473.2)" style="isolation:isolate;font-size:17.612450301856324px;font-family:Candelia;" xml:space="preserve">ion he</text>
    </g>
    <text transform="matrix(0.58, -0.05, 0.08, 1, 456.57, 452.34)" style="isolation:isolate;font-size:29.703132589027366px;font-family:Candelia;" xml:space="preserve">ad</text>
    <text transform="matrix(0.55, 0.1, -0.19, 0.98, 488.11, 443.25)" style="isolation:isolate;font-size:26.22822139574134px;font-family:Candelia;" xml:space="preserve">ing hea</text>
    <text transform="matrix(0.71, 0.38, -0.47, 0.88, 574.26, 458.55)" style="isolation:isolate;font-size:19.32429922780683px;font-family:Candelia;" xml:space="preserve">dline </text>
    <text transform="matrix(0.67, 0.38, -0.49, 0.87, 637.69, 489.21)" style="font-size:11.75326388463536px;font-family:Candelia;" xml:space="preserve">title     </text>
</svg>