Related issue: https://bugs.webkit.org/show_bug.cgi?id=168421 (This issue for chromium: https://bugs.chromium.org/p/chromium/issues/detail?id=693037 ) Test case: http://software.hixie.ch/utilities/js/live-dom-viewer/saved/4892 HTML standard: [[ The following content attributes must not be specified and do not apply to the element: ... readonly, ... ]] https://html.spec.whatwg.org/#range-state-(type=range) In Gecko and Edge, readonly does not apply as per spec. I think the WebKit/Chromium is confusing UI. (Credit to chaals for bringing this to my attention in https://github.com/whatwg/html/issues/2311#issuecomment-278002216 )
<rdar://problem/30593189>
Created attachment 302067 [details] Patch
Comment on attachment 302067 [details] Patch Clearing flags on attachment: 302067 Committed r212610: <http://trac.webkit.org/changeset/212610>
All reviewed patches have been landed. Closing bug.