[Webkit-unassigned] [Bug 192495] New: getBoundingClientRect() returns wrong size when started before a br tag.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=192495

            Bug ID: 192495
           Summary: getBoundingClientRect() returns wrong size when
                    started before a br tag.
           Product: WebKit
           Version: Safari 12
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: giosia at google.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

Created attachment 356797

  --> https://bugs.webkit.org/attachment.cgi?id=356797&action=review

Calculating the height of Range that is adjacent to a break is incorrect in WebKit.

Calculating the height of Range that includes a <br> often returns incorrect sizes. This seems to happen when the start of the range is a node that is a sibling of a <br> that is included in the range.

<div>ABCDEFGHI</div>
range(CD), height = 18
range(CDEFG), height = 18

<div>ABC<br>DEF<br>GHI</div>
range(CD), height = 18 (Should be 34)
range(CDEFG), height = 34 (Should be 50)


WORKAROUND: Don't allow startContainer of a range to be siblings of <br> nodes by wrapping the start text in a span.

<div><span>ABC</span><br>DEF<br>GHI</div>
range(CD), height = 34
range(CDEFG), height = 50

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