After adding code block with javascript, Edit page broken

Site URL: https://www.divinecompasshealing.com/playlists

I used a code block to add this GetResponse form.  I selected HTML and unchecked display source.  In production, the form works. 

However, when I click Edit on that page, nothing happens.  I cannot edit it.  If I do an incognito window with /safe on my url (so scripts disabled), then I can edit the page.  Is this normal?  Or what am I doing wrong?

<script type="text/javascript" src="https://app.getresponse.com/view_webform_v2.js?u=xxxxx&webforms_id=xxxxx" data-webform-id="xxxxx"></script>

And any plans for squarespace to have a formal integration with getresponse?