Problem with meta property og in WhatsApp

Hello,
When I activate Autoptimize, WhatsApp stops showing the previews from:

<meta property="og:site_name" content="My Site" />
<meta property="og:type" content="article" />
<meta property="og:url" content="site.com/article" />
<meta property="og:title" content="My title" />
<meta property="og:image" content="image.jpg" />
<meta property="og:description" content="This is my description..." />

They work fine in Facebook and Twitter, but not in WhatsApp.
I notice that when Autoptimize is active, it removes quotes, so this line:
<meta property="og:image" content="image.jpg" />
is converted to:
<meta property=og:image content=image.jpg />