[Webkit-unassigned] [Bug 13736] New: REGRESSION: Using the down arrow in a textarea gets "stuck" at the end of a wrapped line

[bugzilla-daemon at webkit.org]

http://bugs.webkit.org/show_bug.cgi?id=13736

           Summary: REGRESSION: Using the down arrow in a textarea gets
                    "stuck" at the end of a wrapped line
           Product: WebKit
           Version: 522+ (nightly)
          Platform: Macintosh
        OS/Version: Mac OS X 10.4
            Status: NEW
          Keywords: Regression, NativeTextArea, NeedsRadar
          Severity: Normal
          Priority: P1
         Component: Forms
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: ddkilzer at webkit.org
                CC: harrison at apple.com, justin.garcia at apple.com


* SUMMARY
After typing text into a textarea, scrolling down using the down arrow
sometimes gets stuck at the end of a wrapped line.

* STEPS TO REPRODUCE
1. Type text into a (LTR) textarea.
2. Move cursor to the top-left corner so that using the down-arrow moves the
cursor only vertically (to the beginning of each line).
3. Start using the down arrow on the typed text.

* EXPECTED RESULTS
The down arrow should move the cursor all the way to the bottom of the
textarea, and the cursor should stay on the far left side of every line.

* ACTUAL RESULTS
Occasionally, hitting the down arrow will move the cursor to the end of the
current line (instead of to the beginning of the next line), and additional
down arrow key presses will not move it any further.

* REGRESSION
This is a regression from shipping Safari 2.0.4 (419.3) on Mac OS X 10.4.9
(8P135).  This happened on a local debug build of WebKit r21489 with the
aforementioned software.

* NOTES
I can't reproduce this on demand.  I believe it has something to do with how
the text is edited in the textarea, creating some kind of internal
representation that misbehaves when using the down arrow.


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