When I set style.layout of smart button to "horizontal", there is no credit card icons

[Xiamh]

<script src="<a href="https://www.paypal.com/sdk/js?client-id=sb"></script" target="_blank">https://www.paypal.com/sdk/js?client-id=sb"></script</a>>
<script>  paypal.Buttons({    style: {      layout: 'horizontal',
      fundingicons: 'true'
    },    funding: {      allowed: [paypal.FUNDING.CREDIT]
    }
  }).render('#paypal-button-container'); </script>

The smart button is all right with card icons when I use the default layout attribution "vertical". But it only displays the paypal buttton when changed to "horizontal".
How to fix this issue pls?

[phucsystem]

I'm having the same issue.
Anyone can help us?