[wp-trac] [WordPress Trac] #35947: Customizer Bug

[WordPress Trac]

#35947: Customizer Bug
--------------------------+-----------------------------
 Reporter:  tronoxas      |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Customize     |    Version:  4.4.2
 Severity:  normal        |   Keywords:
  Focuses:                |
--------------------------+-----------------------------
 Here's a short video of the bug -
 https://www.youtube.com/watch?v=va2CvpoBgZM

 There's this unnecessary spacing when you go inside a panel.

 Steps to be taken to reproduce the problem - this is the code that you can
 use in functions.php to replicate the problem.

 {{{#!php
 <?php
 function aristath_custom_test_settings( $wp_customize ) {

     $panels_nr   = 20;
     $sections_nr = 20;
     $fields_nr   = 2;

     // Create panels
     for ( $panel_id = 0; $panel_id <= $panels_nr; $panel_id++ ) {

         $wp_customize->add_panel( 'panel_' . $panel_id, array(
             'title'      => sprintf( __( 'Panel %s', 'my_theme' ),
 $panel_id ),
             'capability' => 'edit_theme_options',
         ) );

         // Create sections
         for ( $section_id = 0; $section_id <= $sections_nr; $section_id++
 ) {
             $wp_customize->add_section( 'panel_' . $panel_id . '_section_'
 . $section_id, array(
                 'title'      => sprintf( __( 'Panel %1s Section %2s',
 'my_theme' ), $panel_id, $section_id ),
                 'capability' => 'edit_theme_options',
                 'panel'      => 'panel_' . $panel_id,
             ) );

             // create fields
             for ( $field_id = 0; $field_id <= $fields_nr; $field_id++ ) {
                 $setting = 'panel_' . $panel_id . '_section_' .
 $section_id . '_field_' . $field_id;
                 $wp_customize->add_setting( $setting, array(
                     'default'    => '',
                     'type'       => 'theme_mod',
                     'capability' => 'edit_theme_options',
                 ) );
                 $wp_customize->add_control( $setting, array(
                     'label'    => sprintf( __( 'Panel %1s Section %2s
 Field %3s', 'my_theme' ), $panel_id, $section_id, $field_id ),
                     'section'  => 'panel_' . $panel_id . '_section_' .
 $section_id,
                     'settings' => $setting,
                     'type'     => 'text',
                 ) );
             }
         }
     }
 }
 add_action( 'customize_register', 'aristath_custom_test_settings' );

 }}}

 Problem occurs in twentysixteen. All the plugins have been deactivated.

 OS & Browser - Windows 8 Pro 64 bit, Firefox.

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Ticket URL: <https://core.trac.wordpress.org/ticket/35947>
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