Bug 15247 – REGRESSION: Browser window shrinks while visiting aljazeera.net story

• Component: New Bugs
• Status: RESOLVED FIXED

[Ahmed Al-Saadi]

The browser window shrinks automatically to a small rectangle when any of the first page stories on aljazeera.net is viewed. When the window is resized to a normal view, the tabs only have their top halves shown. When the mouse pointer is moved on an unselected tab, the tab appears in full, but only its upper half is active (ie., can be clicked to switch to that tab). Once a tab is clicked and the page is switched to that tab, the tabs disappear again.

Please note that aljazeera.net is  (unfortunately) IE-centric!
Currently using build 523.6+

[David Kilzer (:ddkilzer)]

Confirmed with a local debug build of WebKit r25670 with Safari 3 Public Beta v. 3.0.3 (522.12.1) on Mac OS X 10.4.10 (8R218).

I'm also going to call this a regression since loading the same page with Safari 2.0.4 (419.3) with original WebKit on Mac OS X 10.4.10 (8R218) does not exhibit this behavior.  (Of course there are more errors in the JavaScript Console, but it still doesn't make the window tiny or cause tabs to behave strangely.)

[David Kilzer (:ddkilzer)]

<rdar://problem/5496800>

[Mark Rowe (bdash)]

The symptoms suggest to me that this may be an issue in Safari rather than WebKit.  A malfunctioning tab bar, for instance, would seem to have little to do with WebKit.

[Mark Rowe (bdash)]

It looks like there are at least two issues here.  Clearly Safari should not be getting itself into a state where the tab bar is misrendering.  I'll write up a separate radar to cover that issue shortly.  The second is that when the page loads, an iframe at <http://jazad.aljazeera.net/jazcommerce/default.aspx?sThisPage=_1sis_reportsandanalysis_&BannerType=SponsorCMS> is loaded.  This calls through to a function named unresizeFrame which is defined in <http://jazad.aljazeera.net/jazcommerce/CommerceFunctions.js> as:

function unresizeFrame(){
	if(window.top.sponsorAd)
		window.top.sponsorAd.resizeTo(0,0)
}

It is this resize that is leading to problem.

[Mark Rowe (bdash)]

Reduction is at http://bdash.net.nz/files/iframe-resizeTo/.

[Mark Rowe (bdash)]

DOMWindow.resizeTo appears to always affect the outermost frame.  In IE 7, the reduction results in the red iframe being resized to 10x10.  In Safari it currently attempts to resize the browser window.  window.top.myIframe is the DOMWindow associated with the iframe in each case.

[Chris Messina]

I also discovered this problem on a malware site:

http://iexplorer-security.org/?id=987650077 (clicking this link will resize the browser, popup a Javascript prompt [1], and if you click anywhere on the resulting page [2], a .exe file will be downloaded).

However, if you resize the shrunken window, the tabs are clipped: 

http://www.flickr.com/photos/factoryjoe/2521951566/

[1] http://www.flickr.com/photos/factoryjoe/2521108253/in/photostream/
[2] http://www.flickr.com/photos/factoryjoe/2521113925/in/photostream/

[David Kilzer (:ddkilzer)]

(In reply to comment #5)
> Reduction is at http://bdash.net.nz/files/iframe-resizeTo/.

Mark, do you still have this reduction sitting around anywhere?  The URL is now invalid.

[Mark Rowe (bdash)]

(In reply to comment #8)
> (In reply to comment #5)
> > Reduction is at http://bdash.net.nz/files/iframe-resizeTo/.
> 
> Mark, do you still have this reduction sitting around anywhere?  The URL is now
> invalid.

It’s there again now.

[David Kilzer (:ddkilzer)]

(In reply to comment #9)
> (In reply to comment #8)
> > (In reply to comment #5)
> > > Reduction is at http://bdash.net.nz/files/iframe-resizeTo/.
> > 
> > Mark, do you still have this reduction sitting around anywhere?  The URL is now
> > invalid.
> 
> It’s there again now.

Thanks!

The bisect-builds script says this was fixed (progressed) between:

Fails: r36519  Works: r36635

[David Kilzer (:ddkilzer)]

(In reply to comment #10)
> The bisect-builds script says this was fixed (progressed) between:
> 
> Fails: r36519  Works: r36635

Revision r36560 looks awfully suspicious:  <http://trac.webkit.org/changeset/36560>