For example, if you write an "x" in the field "CONTACT FORM SHORTCODE", then "x x" is output on the page. If you enter a shortcode code from a contact form, this will also be displayed twice on the page.
The reason is that in "/tx-onepager/blocks/contacts/contact-1/view.php" an "echo" was forgotten (possibly for debugging reasons).
The code that must be removed to eliminate duplicate output is in line 90:
<?php echo do_shortcode( $contents['form'] ); ?>
As far as I know, the problem came with OnePager version 2.4.0 and is still present in version 2.4.1.
Kind regards,
Chris