Special Character gets deleted from metabox once I publish the page

I believe this is going to boil down to the default escape/sanization callbacks that are applied to fields and field types. It’s something that you can provide your own for. See https://github.com/CMB2/CMB2/wiki/Field-Parameters#sanitization_cb and https://github.com/CMB2/CMB2/wiki/Field-Parameters#escape_cb for examples.

It does note, but DOES NOT recommend, that you can bypass completely by passing in a value of false for either of these.

Thank you for getting back to me. Is there a recommended way for me to achieve what I am trying to do? Also, what are the repercussions of altering the escape/sanization?

Mainly what I am trying to do is add a backlash to my text when needed within my text box. For example, I am trying to achieve this ab\cd but when I publish the page it ends up as abcd.

In order to provide accurate help/advice, it’s best if you can provide your box/field configuration. But generally speaking, if you want to avoid CMB2’s default call to stripslashes_deep, but still have the benefits of the sanitization, you can add 'sanitization_cb' => 'sanitize_text_field', to your field configuration. The reason we need more info is because if you’re using a wysiwyg or non-standard text field, that may be the wrong sanitization callback to use.

I am mainly focusing on my repeatable group type= text with the id company_name.

Attached is the code I aim using

add_action( 'cmb2_admin_init', 'lia_jury_metabox' );
function lia_jury_metabox() {
	$prefix = 'jury_';
	$cmb_jury = new_cmb2_box( array(
		'id'            => $prefix . 'metabox',
		'title'         => __( 'Jury President Panel' ),
		'object_types'  => array( 'jury', ), // Post type
	) );
$group_field_id = $cmb_jury->add_field( array(
			'id'          => 'jury_team',
			'type'        => 'group',
			'options'     => array(
				'group_title'   => __( 'Team Member {#}' ),
				'add_button'    => __( 'Add Another Member'),
				'remove_button' => __( 'Remove Member'),
				'sortable'      => true, // beta
			),
		) );
			$cmb_jury->add_group_field( $group_field_id, array(
				'name' => 'Name',
				'id'   => 'jury_name',
				'type' => 'text',
			) );
			$cmb_jury->add_group_field( $group_field_id, array(
				'name' => 'Job Title',
				'id'   => 'job_title',
				'type' => 'text',
			) );
			$cmb_jury->add_group_field( $group_field_id, array(
				'name' => 'Company',
				'id'   => 'company_name',
				'type' => 'text',
			) );

Thank you for providing that. So it turns out, WordPress itself removes the slashes, so if you explicitly WANT the slashes, then you need to extra-slash it before it saves. You can, again, do that with the sanitization_cb parameter:

$cmb_jury->add_group_field( $group_field_id, array(
	'name' => 'Company',
	'id'   => 'company_name',
	'type' => 'text',
	'sanitization_cb' => function( $value ) {
		return wp_slash( sanitize_text_field( $value ) );
	},
) );

Perfect! Thank you so much for all your help.