[Webkit-unassigned] [Bug 91950] New: [Chromium] REGRESSION (r117815): Mouse selections leaves residues in zoomed RTL pages (due to sub-pixel layout?)

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=91950

           Summary: [Chromium] REGRESSION (r117815): Mouse selections
                    leaves residues in zoomed RTL pages (due to sub-pixel
                    layout?)
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
               URL: http://forum.bgu.co.il/index.php?showtopic=340065
        OS/Version: Windows 7
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: progame+wk at gmail.com
                CC: eric at webkit.org, eae at chromium.org, leviw at chromium.org


Created an attachment (id=153710)
 --> (https://bugs.webkit.org/attachment.cgi?id=153710&action=review)
Video demo

Reproducible using Chromium and not using Safari because r117815 only enables SUBPIXEL_LAYOUT feature flag on Chromium
http://trac.webkit.org/changeset/117815

Steps to reproduce:
1. Open
http://forum.bgu.co.il/index.php?showtopic=340065
2. Zoom in... try 175% and if it doesn't work try 150% and 125%
I think the issue is zoom related
and possibly also RTL horizontal scrollbar related.
3. Try and replicate the selections shown in the video:
http://youtu.be/F_A1d412J5Y

*When trying to repro, the direction in which you select is important.

Also tracked at http://crbug.com/137456

Chrome version most recently tested:
Google Chrome    22.0.1214.0 (147800) canary
OS    Windows 7
WebKit    537.2 (@123283)

I only tested it under Windows so far.

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