Safari on a 13" Retina Pro has display glitches even on a non-Retina display

Originator:robotspacer
Number:rdar://13092768 Date Originated:26-Jan-2013 03:00 PM
Status:Closed Resolved:15-Mar-2013 06:55 PM
Product:Safari Product Version:6.0.2 (8536.26.17)
Classification:Other Bug Reproducible:Always
 
Summary: Safari/WebKit has minor display glitches on certain web pages on my 13" MacBook Pro with Retina Display. These glitches are present both on the Retina Display itself, and on an external, non-Retina display, like the 27" Cinema Display (even if the Retina display is not on at all). I've checked the current nightly WebKit built (r140906) and the problem is preset there as well.

Steps to Reproduce:
1. Get a 13" MacBook Pro with Retina Display.
2. Visit a web page like this one: http://juncld.com/e3AP
3. Examine the rounded corners on the large image

Expected Results: I would expect a Retina MacBook Pro with an external display to render web pages identically to a non-Retina Mac, without any visual glitches. I would also expect something like a border-radius to render smoothly on the Retina display itself.

Actual Results: Certain web pages exhibit visual glitches. See the attached screenshots for examples. On the Retina display, you can see the glitches in the rounded corners on the right side. On the non-Retina display you can see some missing pixels on the left side.

Regression: Unknown

Notes: These glitches are not limited to rounded corners. Here's another example: http://mikepiontek.com/files/8760/safari-ign.png The black line should not be there, and isn't present on my non-Retina Macs. Unfortunately I'm having trouble finding a live web page that exhibits that problem that I can easily share.

Comments

Fixed in OS X 10.8.3/Safari 6.0.3

This problem seems to be fixed with the latest update.

By robotspacer at March 15, 2013, 10:55 p.m. (reply...)

Happens on other Macs

After hearing from some other people, it seems the same glitches happen on other recent Macs, like the 2012 MacBook Air. (I believe someone also mentioned it happening on a 2012 non-Retina MacBook Pro, but I'm not positive.) I assume the problem is related to something these machines have in common—perhaps the Intel HD Graphics 4000 graphic card?

By robotspacer at Feb. 26, 2013, 1:47 a.m. (reply...)

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