<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<!DOCTYPE bugzilla SYSTEM "https://bugs.webkit.org/page.cgi?id=bugzilla.dtd">

<bugzilla version="5.0.4.1"
          urlbase="https://bugs.webkit.org/"
          
          maintainer="admin@webkit.org"
>

    <bug>
          <bug_id>109230</bug_id>
          
          <creation_ts>2013-02-07 13:59:39 -0800</creation_ts>
          <short_desc>REGRESSION(r130089): Scrollbar thumb no longer re-rendered on hover</short_desc>
          <delta_ts>2013-02-22 17:17:06 -0800</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>1</classification_id>
          <classification>Unclassified</classification>
          <product>WebKit</product>
          <component>Layout and Rendering</component>
          <version>528+ (Nightly build)</version>
          <rep_platform>Unspecified</rep_platform>
          <op_sys>Unspecified</op_sys>
          <bug_status>RESOLVED</bug_status>
          <resolution>FIXED</resolution>
          
          
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords>HasReduction, InRadar, Regression</keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          
          <everconfirmed>1</everconfirmed>
          <reporter name="Mihai Parparita">mihaip</reporter>
          <assigned_to name="Dimitri Glazkov (Google)">dglazkov</assigned_to>
          <cc>allan.jensen</cc>
    
    <cc>ap</cc>
    
    <cc>bdakin</cc>
    
    <cc>dglazkov</cc>
    
    <cc>eric</cc>
    
    <cc>esprehn+autocc</cc>
    
    <cc>jonlee</cc>
    
    <cc>macpherson</cc>
    
    <cc>menard</cc>
    
    <cc>nbarth</cc>
    
    <cc>ojan.autocc</cc>
    
    <cc>simon.fraser</cc>
    
    <cc>webkit-bug-importer</cc>
    
    <cc>webkit.review.bot</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>827881</commentid>
    <comment_count>0</comment_count>
    <who name="Mihai Parparita">mihaip</who>
    <bug_when>2013-02-07 13:59:39 -0800</bug_when>
    <thetext>Test case: http://persistent.info/chromium/test-cases/scrollbar-hover.html

If you hover over the main indicated div, its contents turn green. However, the scrollbar thumb (styled via a #scrollable:hover::-webkit-scrollbar-thumb rule) stays red, instead of also turning green (the thumb only changes color when it itself is hovered over).

This used to work as expected before r130089 (is also the behavior seen in Safari 6.0.2 and Chrome 23).</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>830432</commentid>
    <comment_count>1</comment_count>
    <who name="Alexey Proskuryakov">ap</who>
    <bug_when>2013-02-11 18:34:23 -0800</bug_when>
    <thetext>Dimitry, do you plan to look into this? Or can r130089 be rolled out?</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>830434</commentid>
    <comment_count>2</comment_count>
    <who name="Alexey Proskuryakov">ap</who>
    <bug_when>2013-02-11 18:35:00 -0800</bug_when>
    <thetext>Rolling out seems unlikely, given how old this revision is.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>830477</commentid>
    <comment_count>3</comment_count>
    <who name="Dimitri Glazkov (Google)">dglazkov</who>
    <bug_when>2013-02-11 19:31:32 -0800</bug_when>
    <thetext>Yikes. I totally missed this somehow. I am not planning to tackle this soon.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>831535</commentid>
    <comment_count>4</comment_count>
    <who name="Alexey Proskuryakov">ap</who>
    <bug_when>2013-02-12 19:03:36 -0800</bug_when>
    <thetext>&lt;rdar://problem/13204864&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>831536</commentid>
    <comment_count>5</comment_count>
    <who name="Dimitri Glazkov (Google)">dglazkov</who>
    <bug_when>2013-02-12 19:09:00 -0800</bug_when>
    <thetext>Nils, is this something you might be interested in looking into?</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>831559</commentid>
    <comment_count>6</comment_count>
    <who name="Nils Barth">nbarth</who>
    <bug_when>2013-02-12 20:14:51 -0800</bug_when>
    <thetext>(In reply to comment #5)
&gt; Nils, is this something you might be interested in looking into?

Sure, I can take a look at it!</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>837323</commentid>
    <comment_count>7</comment_count>
    <who name="Nils Barth">nbarth</who>
    <bug_when>2013-02-20 04:00:36 -0800</bug_when>
    <thetext>To add some links; apparently:
r130089: &lt;http://trac.webkit.org/changeset/130089&gt;
which applied Patch 166548 to fix Bug 97953 - Kill transitive effects of SelectorChecker::checkOneSelector.
https://bugs.webkit.org/attachment.cgi?id=166548&amp;action=review
caused this regression.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>837450</commentid>
    <comment_count>8</comment_count>
    <who name="Dimitri Glazkov (Google)">dglazkov</who>
    <bug_when>2013-02-20 07:15:21 -0800</bug_when>
    <thetext>(In reply to comment #7)
&gt; To add some links; apparently:
&gt; r130089: &lt;http://trac.webkit.org/changeset/130089&gt;
&gt; which applied Patch 166548 to fix Bug 97953 - Kill transitive effects of SelectorChecker::checkOneSelector.
&gt; https://bugs.webkit.org/attachment.cgi?id=166548&amp;action=review
&gt; caused this regression.

http://www.youtube.com/watch?v=Ya2xifdO_l0 :-\</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>837522</commentid>
    <comment_count>9</comment_count>
    <who name="Dimitri Glazkov (Google)">dglazkov</who>
    <bug_when>2013-02-20 09:39:01 -0800</bug_when>
    <thetext>I didn&apos;t realize I caused this. I&apos;ll look into this tonight.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>839484</commentid>
    <comment_count>10</comment_count>
      <attachid>189752</attachid>
    <who name="Nils Barth">nbarth</who>
    <bug_when>2013-02-22 05:30:22 -0800</bug_when>
    <thetext>Created attachment 189752
Test case (interactive)

Uploading Mihai&apos;s test case for reference.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>839490</commentid>
    <comment_count>11</comment_count>
      <attachid>189754</attachid>
    <who name="Nils Barth">nbarth</who>
    <bug_when>2013-02-22 05:34:19 -0800</bug_when>
    <thetext>Created attachment 189754
Cleanup reftest</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>839498</commentid>
    <comment_count>12</comment_count>
      <attachid>189752</attachid>
    <who name="Nils Barth">nbarth</who>
    <bug_when>2013-02-22 05:38:19 -0800</bug_when>
    <thetext>Comment on attachment 189752
Test case (interactive)

Original manual test obsoleted by reftest.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>839504</commentid>
    <comment_count>13</comment_count>
      <attachid>189757</attachid>
    <who name="Nils Barth">nbarth</who>
    <bug_when>2013-02-22 05:40:02 -0800</bug_when>
    <thetext>Created attachment 189757
Test case (interactive) (actual file)

Original test case (for reference; including actual document, not just URL -- oops!)</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>839505</commentid>
    <comment_count>14</comment_count>
      <attachid>189757</attachid>
    <who name="Nils Barth">nbarth</who>
    <bug_when>2013-02-22 05:40:29 -0800</bug_when>
    <thetext>Comment on attachment 189757
Test case (interactive) (actual file)

Obsoleted by reftest</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>839522</commentid>
    <comment_count>15</comment_count>
      <attachid>189761</attachid>
    <who name="Nils Barth">nbarth</who>
    <bug_when>2013-02-22 05:55:50 -0800</bug_when>
    <thetext>Created attachment 189761
Update reftest: also style scrollbar itself</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>839529</commentid>
    <comment_count>16</comment_count>
    <who name="Nils Barth">nbarth</who>
    <bug_when>2013-02-22 05:58:23 -0800</bug_when>
    <thetext>Just uploaded a reftest.

Looked into this a bit -- as Mihai notes, this looks to be a *re-rendering* issue.
Hover correctly updates the CSS (per DOM Inspector), but the scrollbar thumb pseudo-element isn&apos;t re-rendered.
This also affects the scrollbar (background) itself; it&apos;s not something special to the thumb.

Dimitri, as you wrote the patch fixing the earlier bug, you&apos;re naturally best-placed to address this, but if you&apos;d like me to look into it further I&apos;d be happy to.
(Writing the reftest didn&apos;t require understanding what&apos;s going on under the hood, so that was easy enough.)</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>839621</commentid>
    <comment_count>17</comment_count>
    <who name="Dimitri Glazkov (Google)">dglazkov</who>
    <bug_when>2013-02-22 08:52:51 -0800</bug_when>
    <thetext>(In reply to comment #16)
&gt; Just uploaded a reftest.

Bless you. A true Barth.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>839624</commentid>
    <comment_count>18</comment_count>
    <who name="Dimitri Glazkov (Google)">dglazkov</who>
    <bug_when>2013-02-22 08:53:43 -0800</bug_when>
    <thetext>This looks promising.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>839994</commentid>
    <comment_count>19</comment_count>
      <attachid>189832</attachid>
    <who name="Dimitri Glazkov (Google)">dglazkov</who>
    <bug_when>2013-02-22 14:37:27 -0800</bug_when>
    <thetext>Created attachment 189832
Patch</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>840009</commentid>
    <comment_count>20</comment_count>
      <attachid>189832</attachid>
    <who name="Eric Seidel (no email)">eric</who>
    <bug_when>2013-02-22 14:43:55 -0800</bug_when>
    <thetext>Comment on attachment 189832
Patch

er mer gerd</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>840149</commentid>
    <comment_count>21</comment_count>
      <attachid>189832</attachid>
    <who name="WebKit Review Bot">webkit.review.bot</who>
    <bug_when>2013-02-22 17:17:01 -0800</bug_when>
    <thetext>Comment on attachment 189832
Patch

Clearing flags on attachment: 189832

Committed r143819: &lt;http://trac.webkit.org/changeset/143819&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>840150</commentid>
    <comment_count>22</comment_count>
    <who name="WebKit Review Bot">webkit.review.bot</who>
    <bug_when>2013-02-22 17:17:06 -0800</bug_when>
    <thetext>All reviewed patches have been landed.  Closing bug.</thetext>
  </long_desc>
      
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            <attachid>189752</attachid>
            <date>2013-02-22 05:30:22 -0800</date>
            <delta_ts>2013-02-22 05:38:19 -0800</delta_ts>
            <desc>Test case (interactive)</desc>
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            <attacher name="Nils Barth">nbarth</attacher>
            
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            <attachid>189754</attachid>
            <date>2013-02-22 05:34:19 -0800</date>
            <delta_ts>2013-02-22 05:55:45 -0800</delta_ts>
            <desc>Cleanup reftest</desc>
            <filename>bug-109230-20130222223038.patch</filename>
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            <attacher name="Nils Barth">nbarth</attacher>
            
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            <date>2013-02-22 05:40:02 -0800</date>
            <delta_ts>2013-02-22 05:40:29 -0800</delta_ts>
            <desc>Test case (interactive) (actual file)</desc>
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            <date>2013-02-22 05:55:50 -0800</date>
            <delta_ts>2013-02-22 14:37:21 -0800</delta_ts>
            <desc>Update reftest: also style scrollbar itself</desc>
            <filename>bug-109230-20130222225209.patch</filename>
            <type>text/plain</type>
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            <date>2013-02-22 14:37:27 -0800</date>
            <delta_ts>2013-02-22 17:17:00 -0800</delta_ts>
            <desc>Patch</desc>
            <filename>bug-109230-20130222143346.patch</filename>
            <type>text/plain</type>
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            <attacher name="Dimitri Glazkov (Google)">dglazkov</attacher>
            
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          </attachment>
      

    </bug>

</bugzilla>