$(...).find(...).once is not a function Drupal 8.2.5 I just updated core from 8.2.4 to 8.2.5 and now I am getting this error in my console which is causing some other JS items not to work

    Uncaught TypeError: $(...).find(...).once is not a function
        at Object.attach (eval at globalEval (jquery.min.js?v=2.2.3:2), &lt;anonymous&gt;:156:44)
        at Object.Drupal.attachBehaviors (drupal.js?v=8.2.5:168)
        at insert (ajax.js?v=8.2.5:1084)
        at Drupal.AjaxCommands.loadEditorsAjax.commands.insert (quickedit.js?v=8.2.5:523)
        at Drupal.Ajax.success (ajax.js?ojj3xe:155)
        at Object.success (ajax.js?v=8.2.5:505)
        at i (jquery.min.js?v=2.2.3:2)
        at Object.fireWith [as resolveWith] (jquery.min.js?v=2.2.3:2)
        at z (jquery.min.js?v=2.2.3:4)
        at XMLHttpRequest.&lt;anonymous&gt; (jquery.min.js?v=2.2.3:4)


Drupal 8.2.4 was using jquery 2.2.3 and so is drupal 8.2.5 so I am not sure what is going on here. 

Any ideas? I tried updating jquery to 3.0.0 but that didn't work. Same error.
As suspected and confirmed this is an issue with the bootstrap theme. My advice would be to roll back to the previous working version and open a bug report in their issue queue on drupal.org.