When a form is submitted, the default behavior of Gravity Forms is to scroll to the confirmation message. In the vast majority of cases, this is the desired behavior, but in a few scenarios, you may want to disable this functionality.
Use the gform_confirmation_anchor Filter
Gravity Forms makes it incredibly easy to remove this functionality by providing an easy-to-use filter.
Disabling Automatic Scrolling On a Specific Form
To disable automatic scrolling on a specific form, use the gform_confirmation_anchor filter like so, replacing # with the form ID:
add_filter( 'gform_confirmation_anchor_#', '__return_false' );
Disabling Automatic Scrolling On All Forms
Disabling automatic scrolling on all forms is just as easy as disabling it on a specific form. Use the filter like the following:
add_filter( 'gform_confirmation_anchor', '__return_false' );
Placement
This code can be used in the functions.php file of the active theme, a custom functions plugin, a custom add-on, or with a code snippets plugin.
See also the PHP section in this article: Where Do I Put This Code?