No longer able to use tabbed browsing on Roll20

Whenever I try to open a second tab of Roll20 in my browser, it closes as soon as it loads.  This has been happening for about a week. Using Firefox 56 EDIT: Sometimes it happens, sometimes it doesn't.  It happens most often when I browse the Marketplace.

about:blank : Unable to run script because scripts are blocked internally. (unknown) unreachable code after return statement browse.js:655:3 Loading failed for the &lt;script&gt; with source “<a href="https://js-agent.newrelic.com/nr-1059.min.js”" rel="nofollow">https://js-agent.newrelic.com/nr-1059.min.js”</a>. browse:1 unreachable code after return statement browse.js:655:3 Loading failed for the &lt;script&gt; with source “<a href="https://connect.facebook.net/en_US/fbevents.js”" rel="nofollow">https://connect.facebook.net/en_US/fbevents.js”</a>. 5e-mini-dungeons-bundle-number-016-number-020:1 Loading failed for the &lt;script&gt; with source “<a href="https://js-agent.newrelic.com/nr-1059.min.js”" rel="nofollow">https://js-agent.newrelic.com/nr-1059.min.js”</a>. 5e-mini-dungeons-bundle-number-016-number-020:1 Content Security Policy: Directive ‘frame-src’ has been deprecated. Please use directive ‘child-src’ instead. (unknown) unreachable code after return statement browse.js:655:3 unreachable code after return statement browse.js:655:3 Loading failed for the &lt;script&gt; with source “<a href="https://connect.facebook.net/en_US/fbevents.js”" rel="nofollow">https://connect.facebook.net/en_US/fbevents.js”</a>. 5e-mini-dungeons-bundle-number-016-number-020:1 Loading failed for the &lt;script&gt; with source “<a href="https://connect.facebook.net/en_US/fbevents.js”" rel="nofollow">https://connect.facebook.net/en_US/fbevents.js”</a>. 5e-mini-dungeons-bundle-number-016-number-020:1 Loading failed for the &lt;script&gt; with source “<a href="https://connect.facebook.net/en_US/fbevents.js”" rel="nofollow">https://connect.facebook.net/en_US/fbevents.js”</a>. 5e-mini-dungeons-bundle-number-016-number-020:1 Loading failed for the &lt;script&gt; with source “<a href="https://connect.facebook.net/en_US/fbevents.js”" rel="nofollow">https://connect.facebook.net/en_US/fbevents.js”</a>. 5e-mini-dungeons-bundle-number-016-number-020:1 Loading failed for the &lt;script&gt; with source “<a href="https://js-agent.newrelic.com/nr-1059.min.js”" rel="nofollow">https://js-agent.newrelic.com/nr-1059.min.js”</a>. 5e-mini-dungeons-bundle-number-016-number-020:1 Loading failed for the &lt;script&gt; with source “<a href="https://js-agent.newrelic.com/nr-1059.min.js”" rel="nofollow">https://js-agent.newrelic.com/nr-1059.min.js”</a>. 5e-mini-dungeons-bundle-number-016-number-020:1 Loading failed for the &lt;script&gt; with source “<a href="https://js-agent.newrelic.com/nr-1059.min.js”" rel="nofollow">https://js-agent.newrelic.com/nr-1059.min.js”</a>. 5e-mini-dungeons-bundle-number-016-number-020:1 Loading failed for the &lt;script&gt; with source “<a href="https://js-agent.newrelic.com/nr-1059.min.js”" rel="nofollow">https://js-agent.newrelic.com/nr-1059.min.js”</a>. 5e-mini-dungeons-bundle-number-016-number-020:1 Loading failed for the &lt;script&gt; with source “<a href="https://connect.facebook.net/en_US/fbevents.js”" rel="nofollow">https://connect.facebook.net/en_US/fbevents.js”</a>. roll20.net:1 Unchecked lastError value: Error: Frame not found, or missing host permission ExtensionCommon.jsm:304 Loading failed for the &lt;script&gt; with source “<a href="https://js-agent.newrelic.com/nr-1059.min.js”" rel="nofollow">https://js-agent.newrelic.com/nr-1059.min.js”</a>. roll20.net:1 unreachable code after return statement browse.js:655:3 Loading failed for the &lt;script&gt; with source “<a href="https://js-agent.newrelic.com/nr-1059.min.js”" rel="nofollow">https://js-agent.newrelic.com/nr-1059.min.js”</a>. browse:1 Tried opening a bunch of tabs.&nbsp; The bold one happened when I tried to open my game LFG window in a separate tab and it closed instantly.

So it was uBlock Origin.&nbsp; That doesn't make much sense but okay.