Erroneous Code in Page

I have an Elementor page that is pulling in another page. When I insert a page with a shortcode, it works fine. When I use the Gutenberg block, it adds this code to the bottom of the page:

et_enqueued_post_fonts: a:2:{s:6:"family";a:1:{s:15:"et-gf-open-sans";s:80:"Open+Sans:300,300italic,regular,italic,600,600italic,700,700italic,800,800italic";}s:6:"subset";a:2:{i:0;s:5:"latin";i:1;s:9:"latin-ext";}}
classic-editor-remember: block-editor
eael_transient_elements: a:0:{}

I’ve checked the settings page and “Enable Insert Pages Gutenberg block.” is definitely selected. I’ve also tried both options for “Wrapper for inserts,” “Insert method,” and “TinyMCE filter” but none of those fixed the issue.

I turned off all the other plugins and tried the 2019 but the problem persists. Please advise.