Hi,
Its a minor bug we will fix into our next update.
For correction you need to code customization.
Go to your core theme directory >> customizer.php file.
open into any text editor.
Now go to line 637 (Approx) and find below line of code snippet
Kirki::add_field('matrix_theme', array(
'settings' => 'home_service_description',
'label' => __('Home Extra Content Section Description', 'matrix'),
'section' => 'extra_sec',
'type' => 'textarea',
'priority' => 10,
'transport' => 'postMessage',
'default' => $matrix_theme_options['home_service_description'],
'sanitize_callback' => 'matrix_sanitize_text'
));
and replace with below line of code snippet
Kirki::add_field('matrix_theme', array(
'settings' => 'home_extra_description',
'label' => __('Home Extra Content Section Description', 'matrix'),
'section' => 'extra_sec',
'type' => 'textarea',
'priority' => 10,
'transport' => 'postMessage',
'default' => $matrix_theme_options['home_extra_description'],
'sanitize_callback' => 'matrix_sanitize_text'
));
Save the changes.
Let us know for further assistance.
Hope you done.
Thank You