[Webkit-unassigned] [Bug 151702] New: Content Blocker does not apply "css-display-none" rules when page is loaded in non-active tab

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=151702

            Bug ID: 151702
           Summary: Content Blocker does not apply "css-display-none"
                    rules when page is loaded in non-active tab
    Classification: Unclassified
           Product: WebKit
           Version: Safari 9
          Hardware: All
                OS: iOS 9.0
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit Misc.
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: am at adguard.com

Steps to reproduce (tested on ipad mini 2):

1. Register a simple content blocker with one rule (hiding "share" buttons on macrumors.com)
[{trigger: {url-filter: ".*", resource-type: ["document"], if-domain: ["*macrumors.com"]}, action: {type: "css-display-none", selector: ".social"}}]
2. Open macrumors.com. Share buttons are hidden http://screencast.com/t/88mfI2UM
3. Tap on the article header and select "Open in New Tab"
4. Wait a bit then switch to that new tab

Expected result:
Share buttons should be hidden

Real result:
Share buttons block is visible
The block will be hidden if you refresh the page

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