Form not sending within apply_shortcodes

Hi there,

I encounter an issue where my form displays correctly but doesn’t want to send if used within an apply_shortcodes:

<?php echo apply_shortcodes('[contact-form-7 id="112" title="Reservation"]'); ?>

As soon as I use the shortcode in a regular text field it functions as expected..
I did setup a custom smtp which also works fine. I checked Chrome Devtools but nothing shows up in the network or console tab.

Any thoughts?

Thanks in advance.