269832 2024-02-20 23:37:52 -0800 setValidity of ElementInternals can't handle missing optional anchor parameter 2025-03-27 11:02:48 -0700 1 1 1 Unclassified WebKit Forms Safari 17 Unspecified Unspecified RESOLVED FIXED BrowserCompat, InRadar P2 Normal --- 154907 1 jeripeier rniwa akeerthi ashvayka cdumez karlcow lukas.spirig mike rniwa webkit-bug-importer wenson_hsieh oldest_to_newest 2015694 0 jeripeier 2024-02-20 23:37:52 -0800 Steps to reproduce: 1. Go to https://jsfiddle.net/3js69ngu/3/. You will find a custom web component imitating a checkbox form control. 2. Click on "Submit Form" in the "Custom Checkbox" section Actual results: - No validation message appears - Console error: "An invalid form control is not focusable." There is the "setValidity(flags?: ValidityStateFlags, message?: string, anchor?: HTMLElement): void;" method to set the validity state of a custom component using ElementInternals. As per description, the "anchor" parameter, which is used as the anchor to display the validity message, is optional. However, in Firefox, the message is not displayed as long anchor parameter is not provided. The error message "An invalid form control is not focusable." is not true, as the custom form component (see https://jsfiddle.net/3js69ngu/3/) is focusable. Providing the host of the component as parameter is not possible, as the anchor parameter element needs to be inside the shadow DOM. Definition: anchor – An HTMLElement which can be used by the user agent to report problems with this form submission. Expected results: Not passing an anchor should focus the host and display the message there. Check Chromium, where it is implemented and working like expected. 2016036 1 jeripeier 2024-02-22 02:57:22 -0800 Related specification discussion: https://github.com/whatwg/html/issues/10155 2017409 2 webkit-bug-importer 2024-02-27 23:38:14 -0800 <rdar://problem/123744294> 2066954 3 lukas.spirig 2024-10-10 11:35:10 -0700 Has there been any progress with this? Firefox has since addressed this: https://bugzilla.mozilla.org/show_bug.cgi?id=1881199 2106311 4 rniwa 2025-03-26 17:43:52 -0700 Pull request: https://github.com/WebKit/WebKit/pull/43076 2106501 5 ews-feeder 2025-03-27 11:02:45 -0700 Committed 292770@main (cdd7bac298f5): <https://commits.webkit.org/292770@main> Reviewed commits have been landed. Closing PR #43076 and removing active labels.