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safari rendering issues

37922 Views 239 Replies Latest reply: Apr 22, 2013 2:50 AM by bluejay0018 RSS
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Shawn McCuan Level 1 Level 1 (0 points)
Currently Being Moderated
Jul 27, 2012 10:21 PM

I have been getting some strange rendering issues since upgrading to OSX Mountain Lion/Safari 6. They seem to be fairly random, and happen accross multiple sites, even "big sites" like YouTube. I will get "artifacts" left behind, and I'm even getting them now as I'm typing this message with the text. Because is seems to be so "random" I have no idea what's causing it, but, it's very distracting and obnoxious when the artifacts interfere with navigation. Is anyone else experiencing these problems?

Macbook Pro, Mac OS X (10.6.6), iPod Touch 32GB (4th Gen)
  • Carolyn Samit Level 10 Level 10 (84,180 points)
    Currently Being Moderated
    Jul 27, 2012 11:04 PM (in response to Shawn McCuan)

    Just to rule out any hardware issues, run the Apple Hardware Test

  • Eric Parkinson Calculating status...
    Currently Being Moderated
    Jul 28, 2012 5:29 PM (in response to Shawn McCuan)

    Hello,

     

    I am also experiencing these rendering oddities - usually related with mouseover layer effect or exapand/collapse actions.

     

    In addition to this, I am experiencing issues while typing text in certain form fields within Safari only. As I type, say, my username, the cursor will jump back a few position and/or not render the text I am typing. If I highlight the space, I then see the text. This may be related to the above, but I cannot be sure.

     

    Thanks,


    E.

  • Jerryb Level 3 Level 3 (870 points)
    Currently Being Moderated
    Jul 28, 2012 9:44 PM (in response to Shawn McCuan)

    I also had these problems. Mine were so severe that I was using Chrome, which got some but not as bad as Safari.

     

    I solved the issue by doing a clean install of MT Lion. Previously I had only updated Lion with the new OS. I believe that is the cause of the anomalies.

  • Eric Parkinson Level 1 Level 1 (5 points)
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    Jul 28, 2012 10:48 PM (in response to Jerryb)

    I am seeing those issues on Google Chrome Canary Version 22.0.1220.0 but not on regular Chrome Version 20.0.1132.57.

     

    Perhaps it's related to attempts to render graphics for retina displays? Speculation.

     

    E.

  • TechAddict Level 1 Level 1 (0 points)
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    Jul 30, 2012 9:22 PM (in response to Shawn McCuan)


    Having same problem here.  Only on some sites.  When typing in some text boxes in Safari the cursor starts acting erratically, then letters I type stop rendering, cursor jumps back several spaces and then renders a vertical line next to the last letter it did render.  Very annoying.

  • Daveecee Calculating status...
    Currently Being Moderated
    Jul 30, 2012 11:20 PM (in response to TechAddict)

    I have these problems frequently as well. There seem to be JavaScript rendering issues with Safari. Hope Apple acknowledges them.

  • leftlax Calculating status...
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    Aug 1, 2012 5:35 PM (in response to Shawn McCuan)

    I'm experiencing ongoing rendering problems as well.  The problem is mainly in Safari 6.0 (8536.25) and happened immediately after upgrading to Mt Lion.  Mouseover problems, form completion.  Inconsistent.

  • Phrogz Level 1 Level 1 (25 points)
    Currently Being Moderated
    Aug 1, 2012 8:19 PM (in response to Shawn McCuan)

    It seems like someone tried to optimize the rendering speed by being more aggressive with dirtying/redrawing tighter regions, but the code is buggy. I too see lots of rendering issues with text while typing in a <textarea>, redraw issues in areas like Facebook (clicking to expand comments sometimes does not draw them), and increased problems with SVG dirty rects.

     

    For example, see this demo, and notice how 'junk' is left on screen sometimes around the circle as it moves:

    http://jsfiddle.net/3PfcC/

     

    Here's a screenshot I took while complaining about the upgrade on Google+:

    /___sbsstatic___/migration-images/191/19132740-1.png

     

    In trying to hide the menu, it failed to redraw the page properly. And just now, typing this last sentence, the line of text flickered in and out.

     

    It could be that this is related to the video subsystem. As noted in the screenshot above, I'm experiencing these issues on a 17" Mid-2010 laptop with Intel HD Graphics/GeForce GT 300M internal.

  • brendanfromab Calculating status...
    Currently Being Moderated
    Aug 2, 2012 11:04 PM (in response to Shawn McCuan)

    I'm also experiencing these issues. It's very annoying. Does anyone have any ideas other than a complete OS re-install to fix this?

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