[Webkit-unassigned] [Bug 115736] New: Changing the style of a hidden div queues a repaint

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=115736

           Summary: Changing the style of a hidden div queues a repaint
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: jdapena at igalia.com


Created an attachment (id=200924)
 --> (https://bugs.webkit.org/attachment.cgi?id=200924&action=review)
Test html

Attaching test html.

Test shows how browser updates tiles.
There are 4 divs on page:
one is container and three others are columns with different colors;
right div is hidden(visibility) and placed over two tiles;
Every 3 secs JScript changes colors for left and right divs.
As result, browser updates tiles upper-left(it is place for left div) and upper-right and down-right, BUT nothing changed(visually) on right side.

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