Following RSS links in Macbook Firefox 64.0 often results in redirects and multiple blank windows

<p>The subject pretty well describes the issue. I have to *quickly* force close, restart Firefox and restore windows, with the multiple blank windows unchecked. </p><p>I have viewed probably thousands of RSS links without issue before this version. </p><p>I only see the issue with RSS links but not all of them Maybe this sort of html is causing the problem: &lt;atom:link href="<a href="https://www.easternherald.com/feed/" rel="nofollow">https://www.easternherald.com/feed/</a>" rel="self" type="application/rss+xml" /&gt; I can see no other redirect code, and this type of code seems to be a common factor. </p><p>All dodgy links work fine with MSIE under Windows. </p><p><br> </p><p>FIrefox 64.0 Quantum Macbook Pro 15" mid 2018 - macOS 10.14.2 (18C54) </p>