22826 2013-07-29 02:00:28 +0000 [Shadow]: Clarify how getComputedStyle with unprojected elements works 2014-05-29 08:28:33 +0000 1 1 1 Unclassified WebAppsWG HISTORICAL - Component Model unspecified PC Windows NT RESOLVED WONTFIX P2 normal --- 23062 1 tasak hayato hayato public-webapps-bugzilla oldest_to_newest 91366 0 tasak 2013-07-29 02:00:28 +0000 Originates from http://crbug.com/260502 If you have something like: div #shadow-root <content> div#testCase then remove the content element: div #shadow-root div#testCase then getComputedStyle(testCase) is empty - i.e. no styles are computed, even though the element is in the tree and should inherit. On the other hand, if the content element is never inserted, styles are computed for testCase. 91367 1 tasak 2013-07-29 02:14:19 +0000 Talking about current Blink, when running the testcase with followings: console.log(getComputedStyle(div#testCase)); console.log(getComputedStyle(div#testCase).display); console.log(getComputedStyle(div#testCase).backgroundColor); (a) Before removing <content>: CONSOLE MESSAGE: line 23: [object CSSStyleDeclaration] CONSOLE MESSAGE: line 24: block CONSOLE MESSAGE: line 25: rgba(0, 0, 0, 0) (b) After removing <content>: CONSOLE MESSAGE: line 32: [object CSSStyleDeclaration] CONSOLE MESSAGE: line 33: CONSOLE MESSAGE: line 34: --- So unprojected elements have empty styles? Or unprojected elements have some styles with display: none? 106969 2 hayato 2014-05-29 08:28:33 +0000 Let me close this. I think css-scoping spec should have addressed that.