html content with button containing SVG path doesn't rendered correctly in webview.
e.g html content :
<button type="button" >
<svg id="search-icon" class="search-icon" viewBox="0 0 48 48">
<path d="M15.5 14h-.79l-.28-.27C15.41 12.59 16 11.11 16 9.5 16 5.91 13.09 3 9.5 3S3 5.91 3 9.5 5.91 16 9.5 16c1.61 0 3.09-.59 4.23-1.57l.27.28v.79l5 4.99L20.49 19l-4.99-5zm-6 0C7.01 14 5 11.99 5 9.5S7.01 5 9.5 5 14 7.01 14 9.5 11.99 14 9.5 14z"/>
<path d="M0 0h12v12H0z" fill="none"/>
</svg>
</button>
attached screen shot (8229448_firefox_chrome_webview.png) comparing firefox, chrome and webview.
e.g html content :
<button type="button" >
<svg id="search-icon" class="search-icon" viewBox="0 0 48 48">
<path d="M15.5 14h-.79l-.28-.27C15.41 12.59 16 11.11 16 9.5 16 5.91 13.09 3 9.5 3S3 5.91 3 9.5 5.91 16 9.5 16c1.61 0 3.09-.59 4.23-1.57l.27.28v.79l5 4.99L20.49 19l-4.99-5zm-6 0C7.01 14 5 11.99 5 9.5S7.01 5 9.5 5 14 7.01 14 9.5 11.99 14 9.5 14z"/>
<path d="M0 0h12v12H0z" fill="none"/>
</svg>
</button>
attached screen shot (8229448_firefox_chrome_webview.png) comparing firefox, chrome and webview.