Semantic-Org/Semantic-UI · warning

The overlay setting is no longer supported, use animation: o

Error message

The overlay setting is no longer supported, use animation: overlay

What it means

Emitted by Sidebar's show() (sidebar.js:372-373) when settings.overlay is truthy — the overlay setting was deprecated in favor of animation/transition:'overlay'. Sidebar coerces it (sets settings.transition='overlay') so the overlay animation still runs, then logs this deprecation warning. It is a console.error (sidebar.js:818), not thrown.

Source

Thrown at src/definitions/modules/sidebar.js:1026

  selector: {
    fixed   : '.fixed',
    omitted : 'script, link, style, .ui.modal, .ui.dimmer, .ui.nag, .ui.fixed',
    pusher  : '.pusher',
    sidebar : '.ui.sidebar'
  },

  regExp: {
    ios          : /(iPad|iPhone|iPod)/g,
    mobileChrome : /(CriOS)/g,
    mobile       : /Mobile|iP(hone|od|ad)|Android|BlackBerry|IEMobile|Kindle|NetFront|Silk-Accelerated|(hpw|web)OS|Fennec|Minimo|Opera M(obi|ini)|Blazer|Dolfin|Dolphin|Skyfire|Zune/g
  },

  error   : {
    method       : 'The method you called is not defined.',
    pusher       : 'Had to add pusher element. For optimal performance make sure body content is inside a pusher element',
    movedSidebar : 'Had to move sidebar. For optimal performance make sure sidebar and pusher are direct children of your body tag',
    overlay      : 'The overlay setting is no longer supported, use animation: overlay',
    notFound     : 'There were no elements that matched the specified selector'
  }

};


})( jQuery, window, document );

View on GitHub (pinned to 597843ab84)

Solutions

1. Replace overlay:true with transition:'overlay' (the documented form).
2. Update to the current Semantic UI docs and remove any legacy overlay config.
3. Set silent:true only if you must keep the deprecated setting temporarily.

Example fix

// before
$('.sidebar').sidebar({ overlay: true }).sidebar('show');
// after
$('.sidebar').sidebar({ transition: 'overlay' }).sidebar('show');

// Reject deprecated config early and migrate to the supported form.
function safeSidebar($el, opts){
  opts = opts || {};
  if (opts.overlay) {
    console.warn('sidebar overlay:true is deprecated; use transition:\'overlay\'.');
    opts.transition = 'overlay';
    delete opts.overlay;
  }
  return $el.sidebar(opts);
}

When it happens

Trigger: $('.sidebar').sidebar({ overlay: true }).sidebar('show') — the truthy settings.overlay trips the deprecation branch at sidebar.js:372.

Common situations: Copying old config/examples that used overlay:true, upgrading from an older Semantic UI version where overlay was a first-class setting.

Related errors

• Starting in 2.0 forms now only take a single settings object
• onTabInit has been renamed to onFirstLoad in 2.0, please adj
• onTabLoad has been renamed to onLoad in 2.0. Please adjust y
• The method you called is not defined.
• Had to add pusher element. For optimal performance make sure

AI-assisted analysis of Semantic-Org/Semantic-UI@597843ab84 (2026-08-13). Data as JSON: /api/errors/e17577ab3fd56934. Report an issue: GitHub.