Javascript bugs in Safari 6 on Mountain Lion

Your post is off-topic, but in any case what you're describing sounds like a GPU problem. My iMac had this exact problem and it also died, but I can't remember whether it was 3 days or 3 weeks of the warranty. I argued my case and they allowed me to get it replaced under an 'extended' warranty. You should do the same, be firm but don't lose your top.

In my case, they kept giving me a dodgy replacement motherboard. It took 3 motherboard replacements for a semi-decent one to arrive (it still didn't feel quite as right as the original). After another 3 years this replacement's GPU is dying again (not completely dead as I've taken the iMac out of service and replaced it with a 15" Macbook Pro with 2 GPUs I'm feeling a bit lucky).

Wish you well.

It Is Slightly Off topic, It's also the second part of my Little Rant having created this original thread!, the '09 ha done 2 motherboards too, Not Impressed

I am also facing this issue. Is there any solution? Is this a hardware problem or something to do with Safari? I am seeing same issue in windows VM running on the machine.

-Aditya

I thought I saw a post in here from someone saying that it will be corrected in a 10.8.3 update, which now appears to be missing. I'm still having a problem, but I found a temporary workaround that seems to correct the problem.

I believe it's related to the Dynamic GPU switching on my non-Retina Macbook Pro, and only seems to show up when I'm using the integrated graphics card, when it switches to the more powerful card, the problem goes away.

I've been using gfxCardStatus to switch to the Nvidia card and it seems to correct the problem. Your mileage may very, but here's a link: http://gfx.io

I really don't understand how any particular graphics card can affect the way that CSS is rendered. That seems like a browser engine task to me. These problems do not show up in Chrome or other browsers. I've had a hunch for a while now that corruption is occurring in the browser cache. The problem of broken website layouts seems to occur on sites after a subsequent visits (which is why this issue tends to occur most on GMail, Facebook and other favorite sites). When the browser is reset, everything works perfect for a short while because the corrupted cache is cleared and must be recached. Also, there is the reported issue of people going back one page and seeing only a white screen; again, the browser is not loading the history correctly. This is all just a hunch though.

I've been pretty luke warm about the direction Apple has been going over the past 6 months. If they don't fix this problem on 10.8.3, my feelings will go from luke warm to dislike and I won't be purchasing an Apple product again. It will mean that they don't listen to user feedback and don't quality-control their products. But I'm pretty confident they'll fix it, because it's just so blatently bad.

The latest OS X beta requests testing of Safari. My bet is they will have it fixed soon. But the bug is so terrible that a seperate Safari release should have been done.

I have Safari 6.0.2 and Mountain Lion 10.8.2 and am still experiencing this problem.

noiseordinance wrote:

Also, there is the reported issue of people going back one page and seeing only a white screen....

Umm, yeah : I'd be having that problem too.

As a non-computer type person, I kept thinking it was one of those "well they all do that" kind of things, and I guess it is.

Same problem here: Retina MacBook Pro 2012 with Mountain Lion. Cannot use Safari without closing it completely every few hourse because of white rectangles and flashing input field when entering.

Very anoying, I just switched from Chrome to Safari (because of the URL bar now accepting Google searches) and now have to switch back...

This went away for the past few weeks, but is back badly now.

Twitter, Facebook, almost any advanced "web 2.0" site is completely unusable. Slow, jittery, elements all over the place.

Worse than using ******* Internet Explorer 6 with Windows XP.

It's a really old issue now I can't believe Apple haven't done anything.

I had the same problem. I resetted the PRAM and now the computer is working just fine.

I think, that Safari 6.0.3 fix it! 😝

So far, things seem better for me as well, although there are still a number of things I do regularly on the web ( e-bay, and several IM programs) that Safari works irratically with.

I am currently finding that any amount of javascript causes weird CSS issues with my site that happens no where else (not even on my iphone).

There are no JS errors being reported in the console, everything works smoothly in every other browser, and when I disable javascript in safari everything works fine.

Is there anything further I can do to troubleshoot this?

Thank you SOOOO much Ludovic Portpin I have had this issue for months on my mac mini through every browser. I searched and searched and you had the answer to fix it!