Plugin breaks the content editor tags

We’ve been using this plugin for a while, and its been working great. I think something in the past few months has caused a conflict though.
For some of our non-admin users, when this plugin is running they cannot click the ‘text’ tab above the content editor area. Tab is there, but clicking does nothing.
Deactivating this plugin fixes the issue.

While the plugin is running, we see this error while inspecting the editor page:

Uncaught TypeError: Cannot read property ‘fancyUrls’ of undefined
at HTMLDocument.<anonymous> (quick-add.jsx:52)
at i (load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,jquery-ui-core,utils&ver=5.2.4:2)
at Object.fireWith [as resolveWith] (load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,jquery-ui-core,utils&ver=5.2.4:2)
at Function.ready (load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,jquery-ui-core,utils&ver=5.2.4:2)
at HTMLDocument.J (load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,jquery-ui-core,utils&ver=5.2.4:2)

Seems to be from the quick-add.jsx file on line 52.

We’ve got a large number of other plugins running, so not entirely sure if its a conflict with another plugin, or the current WP version.

We’re also running PHP 7.2

Just throwing this out there in case others have seen this issue and know a fix. We use the Page Links To plugin for a number of pages, so it would be great to get it working again.