Feed Broken after plugin update

Just updated the plugin and the Instant Articles feed is now broken. I’m looking at http://mydomain.com/feed/instant-articles

I’m seeing this in my feed:

<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
	<channel>
		<title>Site Name - Instant Articles</title>
		<link>http://mydomain.com</link>
		<description></description>
								<item>
				<title>Title...</title>
				<link>http://mydomain.com/post-slug/</link>
				<content:encoded>
					<![CDATA[

After that <![CDATA[ the feed ends. Nothing else appears after it.

I’ve tested on another one of my sites and an experiencing the same issue.

https://ww.wp.xz.cn/plugins/fb-instant-articles/