[Webkit-unassigned] [Bug 123501] New: Web Inspector: [CSS Regions] Setting a forced break on an element via WI requires forcing a layout to apply the break.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=123501

           Summary: Web Inspector: [CSS Regions] Setting a forced break on
                    an element via WI requires forcing a layout to apply
                    the break.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Inspector
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: mibalan at adobe.com
                CC: timothy at apple.com, joepeck at webkit.org,
                    webkit-bug-importer at group.apple.com,
                    WebkitBugTracker at adobe.com, graouts at apple.com
            Blocks: 57312


Created an attachment (id=215487)
 --> (https://bugs.webkit.org/attachment.cgi?id=215487&action=review)
HTML file highlighting the problem

Setting a forced break via Web Inspector in an element's style will not change the layout to reflect the break unless a forced layout is triggered (e.g. by resizing the browser window).

Changing a rule however, will immediately change the layout.

Repro:
1. Open attached file
2. Open WebInspector and select first <p> in the <article>
3. Add in its style "-webkit-region-break-after: always"
EXPECTED: Second and third paragraphs flow in the second box
ACTUAL: Second and third paragraphs will not flow in the second box unless you resize the browser window
4. Add "-webkit-region-break-after: always" in the empty "article p" rule
EXPECTED & ACTUAL: Layout changes immediately

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