<?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>114579</bug_id>
          
          <creation_ts>2013-04-13 23:32:30 -0700</creation_ts>
          <short_desc>REGRESSION: Artifacts when scaling non-scaling-strokes</short_desc>
          <delta_ts>2026-03-21 22:59:59 -0700</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>1</classification_id>
          <classification>Unclassified</classification>
          <product>WebKit</product>
          <component>SVG</component>
          <version>528+ (Nightly build)</version>
          <rep_platform>All</rep_platform>
          <op_sys>All</op_sys>
          <bug_status>RESOLVED</bug_status>
          <resolution>CONFIGURATION CHANGED</resolution>
          
          
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords>InRadar, Regression</keywords>
          <priority>P1</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          
          <everconfirmed>1</everconfirmed>
          <reporter name="Stuart P. Bentley">stuart</reporter>
          <assigned_to name="Nobody">webkit-unassigned</assigned_to>
          <cc>ahmad.saleem792</cc>
    
    <cc>dino</cc>
    
    <cc>sabouhallawa</cc>
    
    <cc>simon.fraser</cc>
    
    <cc>taher_ali</cc>
    
    <cc>thorton</cc>
    
    <cc>webkit-bug-importer</cc>
    
    <cc>zimmermann</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>875289</commentid>
    <comment_count>0</comment_count>
      <attachid>197975</attachid>
    <who name="Stuart P. Bentley">stuart</who>
    <bug_when>2013-04-13 23:32:30 -0700</bug_when>
    <thetext>Created attachment 197975
Test case

When a non-scaling stroke is in a scaling animation, it produces artifacts. Found while writing the test case for Bug 114578.

See attached test case. Observed on Windows 7 @ Chrome stable, Windows 8 @ Chrome dev and Arch Linux @ Chromium 26.0.1410.63. Not observed on Android 4.2.1 @ Chrome latest.

(The lines in the test case aren&apos;t perfectly in sync: the spline animating the &quot;desired behavior&quot; mockup was written via trial and error rather than calculation. The end result is what&apos;s important here.)</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>875292</commentid>
    <comment_count>1</comment_count>
    <who name="Stuart P. Bentley">stuart</who>
    <bug_when>2013-04-13 23:34:28 -0700</bug_when>
    <thetext>(In reply to comment #0)

&gt; See attached test case. Observed on Windows 7 @ Chrome stable, Windows 8 @ Chrome dev and Arch Linux @ Chromium 26.0.1410.63. Not observed on Android 4.2.1 @ Chrome latest.

s/Windows 7 @ Chrome stable, Windows 8 @ Chrome dev/Windows 7 @ Chrome dev, Windows 8 @ Chrome stable/</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>875294</commentid>
    <comment_count>2</comment_count>
      <attachid>197976</attachid>
    <who name="Stuart P. Bentley">stuart</who>
    <bug_when>2013-04-13 23:36:15 -0700</bug_when>
    <thetext>Created attachment 197976
Screenshot of bug

Screenshot from Chrome stable on Windows 8.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>875295</commentid>
    <comment_count>3</comment_count>
      <attachid>197977</attachid>
    <who name="Stuart P. Bentley">stuart</who>
    <bug_when>2013-04-13 23:37:40 -0700</bug_when>
    <thetext>Created attachment 197977
Screenshot of bug

Whoops, uploaded the wrong file.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>875456</commentid>
    <comment_count>4</comment_count>
    <who name="Alexey Proskuryakov">ap</who>
    <bug_when>2013-04-14 22:32:13 -0700</bug_when>
    <thetext>I can reproduce with a WebKit nightly, but not with Safari 6.0.3. So, a regression.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1259563</commentid>
    <comment_count>5</comment_count>
    <who name="Stuart P. Bentley">stuart</who>
    <bug_when>2016-12-13 15:34:35 -0800</bug_when>
    <thetext>Based on the behavior I&apos;m seeing right now, this appears to have been fixed at some point between Chrome 55 and the current Chrome Canary I&apos;m running:

Google Chrome	57.0.2950.0 (Official Build) canary (64-bit)
Revision	2c3ecceea409b42c873949bac0aa1acaa80451e3-refs/heads/master@{#438011}
OS	Windows 
JavaScript	V8 5.7.206
Flash	24.0.0.175
User Agent	Mozilla/5.0 (Windows NT 10.0.14393; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2950.0 Safari/537.36
Command Line	&quot;C:\Users\Stuart\AppData\Local\Google\Chrome SxS\Application\chrome.exe&quot; --flag-switches-begin --enable-devtools-experiments --enable-experimental-canvas-features --enable-experimental-web-platform-features --javascript-harmony --flag-switches-end
Executable Path	C:\Users\Stuart\AppData\Local\Google\Chrome SxS\Application\chrome.exe
Profile Path	C:\Users\Stuart\AppData\Local\Google\Chrome SxS\User Data\Default
Variations	16e0dd70-3f4a17df
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Compiler	MSVC 2015 (PGO)</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1833871</commentid>
    <comment_count>6</comment_count>
    <who name="Said Abou-Hallawa">sabouhallawa</who>
    <bug_when>2022-01-25 14:43:31 -0800</bug_when>
    <thetext>rdar://85427884</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1872808</commentid>
    <comment_count>7</comment_count>
    <who name="Ahmad Saleem">ahmad.saleem792</who>
    <bug_when>2022-05-30 13:46:38 -0700</bug_when>
    <thetext>I am still able to reproduce the following bug in Safari 15.5. It seems to be fixed in following Chrome bug:

Link - http://crbug.com/232890</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1904508</commentid>
    <comment_count>8</comment_count>
    <who name="Ahmad Saleem">ahmad.saleem792</who>
    <bug_when>2022-10-10 09:22:28 -0700</bug_when>
    <thetext>(In reply to Ahmad Saleem from comment #7)
&gt; I am still able to reproduce the following bug in Safari 15.5. It seems to
&gt; be fixed in following Chrome bug:
&gt; 
&gt; Link - http://crbug.com/232890

Chrome did the changes in this commit:

https://src.chromium.org/viewvc/blink?revision=149058&amp;view=revision

and it modified following:

https://github.com/WebKit/WebKit/blob/ff25888b2eef782128acebdc87e973415f7d82d4/Source/WebCore/svg/SVGSVGElement.cpp#L379

^ which is same as Chromium / Blink patch but Safari does not have this in SVGSVGElement.h:

bool hasEmptyViewBox() const { return viewBoxIsValid() &amp;&amp; viewBox().isEmpty(); }

but it is is present here:

https://github.com/WebKit/WebKit/blob/e98ff129bc8eba06ac17105f19c5f0e142aab853/Source/WebCore/svg/SVGFitToViewBox.h#L58</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2192295</commentid>
    <comment_count>9</comment_count>
    <who name="Ahmad Saleem">ahmad.saleem792</who>
    <bug_when>2026-03-20 21:04:43 -0700</bug_when>
    <thetext>It does not seem to reproduce on Safari Technology Preview 239. @taher, I think you fixed something recently as well (probably bug 278231)?</thetext>
  </long_desc>
      
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            <attachid>197975</attachid>
            <date>2013-04-13 23:32:30 -0700</date>
            <delta_ts>2013-04-13 23:32:30 -0700</delta_ts>
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            <date>2013-04-13 23:36:15 -0700</date>
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          </attachment>
      

    </bug>

</bugzilla>