Customizer: widget-synced triggers twice

The reason for this is that the widget will run its update logic on keydown and also on change for a given input element. See https://github.com/WordPress/wordpress-develop/blob/4.7.2/src/wp-admin/js/customize-widgets.js#L891-L907

There are some tradeoffs made when widgets were added to the customizer to bring these PHP-driven interfaces into a JS-driven context. It wasn’t perfect and so this is part of the reason behind the JS Widgets feature plugin, to modernize how custom widgets are implemented in the customizer.

If you want to really just listen for when a widget actually changes its state, you can listen for the control’s underlying setting change instead. The setting will only be updated once after a given keydown and subsequent change event.

Related Posts:

  1. Dynamic sidebar areas not working on the Theme Customizer
  2. How can I configure Docker for developing and deploying a custom theme?
  3. Is There A Hook To Process The Content Of The Text Widget?
  4. Custom theme sufficient or custom plugin neccessary for this feature set?
  5. How to create custom home page via plugin?
  6. Featured Image not showing in admin
  7. Customizer Not Saving Options
  8. How Can I setup WP CLI on Windows development machine running AMPPS?
  9. WP_LOCALIZE_SCRIPT doesn’t work
  10. Are we allowed to use the Allman (BSD) indent style when coding WordPress plugins and themes?
  11. Can I individually style items in the backend widget list?
  12. WordPress not working on localhost
  13. “Add A Widget” button in the Customizer
  14. How to limit number of number of categories displayed by categories widget
  15. Custom entity search and display
  16. Why in this archive page that call query_posts() function show only the last 10 posts?
  17. Create Widget or Enable Shortcodes in Sidebar
  18. How to use a WP_Customize_Control outside of the Customizer?
  19. How to replace settings in WordPress plugin from a theme
  20. How to remove/replace current page template?
  21. WordPress dynamic widget by location?
  22. Setting a post’s category
  23. Impossible to declare box-shadow with wp.customize?
  24. Want to know how to reveal a WordPress theme, considering the theme name is hidden?
  25. Metabox types list
  26. Rate limiting ajax requests in WordPress
  27. Set widget icon in Customizer?
  28. Determine if the current page, is being edited
  29. How to embed or integrated a custom WordPress Widget into the theme?
  30. Post Pagination does not working on WP-Query
  31. Managing Custom Designed Content
  32. Best practice: What belongs in theme and what in plugin for large eCommerce website
  33. Adding class to the parent of current-post-ancestor / current-menu-parent / current-post-parent
  34. grouping my widgets wordpress
  35. Is Explicit Versioning a better alternative to Semantic Versioning for wordpress?
  36. Is there any other ways to replicating changes on live from staging without pushing from git
  37. Capture the Selected Radio Button Value between two files in wordpress theme
  38. ajaxurl not defined on front end
  39. How to post data to same page in wordpress
  40. Understanding WordPress functions’ naming conventions
  41. jQuery in header or footer
  42. Allowing for multiple template views on the Gallery Settings page when using the Visual Editor
  43. Add content to widget title in admin area within the widget?
  44. Has anyone managed to integrate the wp_editor inside a widget?
  45. Using Primary Color in Plugin Block
  46. Show a user their recently viewed posts
  47. When is it appropriate to put functions on page template vs. functions.php?
  48. Add new user and add meta at once
  49. Multiple entries in get_option results? or why is _multiwidget set to 1?
  50. How to Display Custom Post Type’s Gallery (images ) in Through WP_Query
  51. Using Ajax call in jQuery doesn’t work in widget
  52. Created Widget Not Showing up on Admin Panel
  53. What’s the better way to add an inline script?
  54. Is there a need to do apply_filter(‘widget_title’, $instance[‘title’]) or any other ‘widget_xxx’ filters?
  55. Metabox Not Showing on Custom Post Type But On Pages and Post
  56. Dynamic content in a widget
  57. Modify the Additional CSS section (adding a disclaimer)
  58. Backslashes being stripped from CSS
  59. Filter, or any way to dynamically change theme screenshot image?
  60. How to integrate plugin in WordPress theme
  61. Finding the paragraphs in content
  62. Order properties should not be accessed directly
  63. How to avoid loading same script twice?
  64. WP_Query returns no results
  65. Finding posts containing matching array elements in a meta field usign WP_Query
  66. Should action callbacks start with a verb?
  67. Executing a function upon webhook calling wordpress
  68. Is It Always a Best Practice to Decouple the Frontend from the Admin Area When Developing a WordPress Application?
  69. Beginner advice
  70. How to render a time-of-day string like ’16:42′ with a site’s chosen time format?
  71. Are block templates incompatible with serialize_blocks?
  72. ServerSideRender and Media Object: attributes passing image data object to php renderer even though it’s not set
  73. How to use a hook to override an update_post_meta call in a plugin?
  74. Form doesnt save to database
  75. Notice: Trying to get property ‘term_id’ of non-object
  76. Selectively update themes in WordPress multisite
  77. Enqueue script globally
  78. Can’t change the style of a submit input type? [closed]
  79. Plugin: database creation
  80. Loading Modernizr (or other JavaScript libraries) for use in a plugin
  81. Issue on Setting $icon_url Parameter on WP add_menu_page()
  82. Are there any official or unofficial guidelines for the styling of a widget?
  83. Ajax: Populate with content from a post’s ID not working – duplicating current page html instead
  84. Logout after clicking URL link results in “headers already sent” error
  85. My WordPress Plugin code breaks customize.php viewpoint
  86. Remove/Hide a Widget on a Custom Template
  87. How to show comments from different Plugins to same post type?
  88. Where to save Gutenberg plugin data?
  89. Add function to Dokan ajax class
  90. How do I make two shortcode use the same id and increment it when I use them multiple times?
  91. How to CRUD from wordpress database in wordpress theme?
  92. Caption Shortcode: what filter to change the image size?
  93. Best strategy for providing theme options using customizer
  94. Detect each active instance of a widget
  95. Issue on Getting WP Gallery Items In cpt-single.php As Attachments
  96. Adding Meta box to thrid-party plugin
  97. Best practice to include custom user styles in widgets
  98. WordPress Beginer to Guru [duplicate]
  99. Invalid Menu Items
  100. How to customize password reset message page on success if no error in password reset