231194 2021-10-04 15:30:16 -0700 HTMLSelectElement's change event does not have composed true set 2021-10-05 10:13:57 -0700 1 1 1 Unclassified WebKit New Bugs Safari 14 Unspecified Unspecified RESOLVED WONTFIX P2 Normal --- 1 emarquez webkit-unassigned akeerthi megan_gardner wenson_hsieh oldest_to_newest 1800248 0 emarquez 2021-10-04 15:30:16 -0700 The `change` event on HTMLSelectElement has {bubbles: true, composed: false} unlike the `input` event which has `{bubbles: true, composed: true}` This means that if someone wants to listen for the change event from a <select> inside of the shadow root of a custom element, then it will not propagate through the composed shadow tree. Live repro: https://jsbin.com/zahocodiwo/edit?html,output Steps to repro: 1. Place a <select> element with <option>s inside a shadow root 2. Add an event listener for the `change` event on the shadow root host 3. toggle between options in the <select> 4. observe that the `change` event listener is not called. Expected behavior: the event listener is called and the change event has `composed: true` Actual behavior: The event listener is not called and the change event has `composed: false` 1800620 1 akeerthi 2021-10-05 10:13:57 -0700 The WHATWG concluded that the `change` event should not be composed. [1] Our behavior matches Chrome and Firefox. [1] https://github.com/whatwg/html/issues/5453#issuecomment-885222243