Enable gutenberg block editor?

Hello,

A huge thanks for a great plugin.

Is there some code snippet we can use to enable the Gutenberg Block Editor when editing tabs?

I’ve used this code snippet to enable the block editor in the product description and it works perfect.

I can create a block on a page, then copy the block and paste it in the custom tab and it works. But as soon as i edit the tab again some content gets broken.
So it would be fantastic to have the block editor in the custom tabs.

Thanks ??