Not Working with Block Editor

Hi, one of our users contacted me to ask for help with a page she was working on. Only the first tab was being displayed, and the other tabs were showing up as headings within the body of the text.

This is a large WP Multisite network of websites, and uses the block editor. She had used the shortcode block to add each of the [tabby title=””] sortcodes as well as the [tabbyending] shortcode.

I activated the Classic Editor plugin and removed all references to beginning/ending block code, and it restored proper Tabby Tabs functionality. I was not able to make it work with the block editor code.

Here is an example of the code:

<!-- wp:shortcode -->
<p>[tabby title="Overview"]</p>
<!-- /wp:shortcode -->

<!-- wp:paragraph -->
<p>Page content information goes here....</p>
<!-- /wp:paragraph -->

<!-- wp:heading -->
<h2 id="h-contact-the-agent">Contact the Agent</h2>
<!-- /wp:heading -->

<!-- wp:group -->
<div class="wp-block-group"><!-- wp:heading {"level":4} -->
<h4>Name, Title</h4>
<!-- /wp:heading -->

<!-- wp:paragraph -->
<p><em>Email: </em></p>
<!-- /wp:paragraph -->

<!-- wp:paragraph -->
<p><em>Phone:</em></p>
<!-- /wp:paragraph -->

<!-- wp:shortcode --> [tabby title="Upcoming Events"] <!-- /wp:shortcode -->

<!-- wp:paragraph -->
<p>Information about event goes here...</p>
<!-- /wp:paragraph -->

<!-- wp:shortcode --> [tabbyending] <!-- /wp:shortcode --></div>
<!-- /wp:group -->

Once I removed the beginning/ending references to blocks, the tabs worked fine. I was wondering if there is currently a better way to use Tabby Tabs with the block editor, or if it is only compatible with the Classic Editor?

Thanks!