On iOS, an element with tabindex ins't focusable unless there is a mouse event listener on it. <rdar://problem/10587484>
Created attachment 297071 [details] Fixes the bug
Comment on attachment 297071 [details] Fixes the bug View in context: https://bugs.webkit.org/attachment.cgi?id=297071&action=review > Source/WebCore/page/ios/FrameIOS.mm:-264 > - ASSERT(!node->isInShadowTree() || node->containingShadowRoot()->mode() != ShadowRootMode::UserAgent); > - Sorry, Antti, I forgot to address your review comment in https://bugs.webkit.org/show_bug.cgi?id=165551#c18 so I'm fixing it here.
Committed r209833: <http://trac.webkit.org/changeset/209833>