Front-end / back-end render_template different

Hi there,

I have made a custom Block with MB Blocks which presents a loop of custom posts. In the output of this block are many link tags (<a>), which is pretty unwanted in the Gutenberg editor itself, because you can now click on items in the Gutenberg editor itself, redirecting the entire page to the permalink…
I would like to remove these link tags in the back-end (admin) mode and replace them with, for example, <div> tags.

Now I tried to use both the render_template and the render_callback function but this does not work.

Is there a way to get this to work?