SVG not rendering correctly (xlink) #5034

@Component({
 selector: 'vbutton',
 template: `<div><svg xmlns="http://www.w3.org/2000/svg"   
 xmlns:xlink="http://www.w3.org/1999/xlink" 
                version="1.1" height="1000" width="1000">
                <defs>
                    <path id="myTextPath" d="M 50,100 Q 150,50 250,100" />
                </defs>

                <circle cx="100" cy="100" r="40" stroke="white" stroke-width="1" fill-opacity="0" />
                <text fill="steelblue" font-size="20">
                    <textPath xlink:href="#myTextPath">This is not showing in Alpha 45!</textPath>
                 </text>
                </svg>
           </div>
            `
})
export class VButton{}