S-text fontWeight doesn't work inside s-menu s-button

I was trying to give the selected option in a menu bold weight like how it’s in Shopify’s admin but it doesn’t work.

<!DOCTYPE html>
<html lang="en">
  <head>        
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <script src="https://cdn.shopify.com/shopifycloud/polaris-1.1-rc.js"></script>
  </head>
  <body> 
    <s-page inlineSize="small">
      <s-section heading="Options">
        <s-button commandFor="options-menu">Select option</s-button>
        <s-menu id="options-menu">       
          <s-button icon="check">
            <s-text fontWeight="bold">Options 1</s-text>
          </s-button>
          <s-button> 
            <s-text>Option 2</s-text>
          </s-button>
        </s-menu>    
      </s-section>
    </s-page>
  </body>       
</html>

The fontWeight attribute isn’t present on s-text in the browser. It seems s-menu takes the textContent of s-button which it places in its own s-text?