The frame displayed with the "What's New" tab under Yahoo Mail renders, but then immediately goes blank. I've also seen this broken behavior with stock Safari 5.0. Problem also seen with the most recent build 61502. The "What's New" tab works in build 59902, but broke starting in nightly build 60027. Tested on Mac OS 10.6.4
Latest build (r61601) still broken, but differently. This build shows a spinning "Loading Updates..." icon, and fails to ever completely load the "What's New" frame. Also changing bug Component to "New Bugs" because now I'm not so sure that this is a "Layout and Rendering" bug.
I cannot reproduce this with local debug build of r61547. I also cannot reproduce with r60027 nightly.
Are you using the "What's New" tab under the *new* Yahoo mail and not the "What's New?" link under the original Yahoo mail? You have to use the "Switch to All-New Mail" under Options to see the new Yahoo mail along with the "What's New" tab to reproduce this problem. I also have IM's defined (along with various status changed from those IM members) listed in that frame which is the frame that doesn't display properly in recent versions of WebKit (for me at least).
> You have to use the "Switch to All-New Mail" under Options I don't have such an option, so I guess I'm using All-New already. There are options for "Mail Classic" and "Mail Plus".
It *appears* that to reproduce this problem, you'll need the most recent version of Flash installed. I saw a familiar "Domains, protocols and ports must match" message in the console log that I had seen before (bug 38427) and since that problem was only seen with the new version of Adobe Flash, I thought it might be related ... As a test, I removed Flash and the problem disappeared with no Flash installed. So, this most likely requires having the most current version of Flash installed to see the problem.
That's interesting! What version of Flash do you have? I have 10.1 r53, and I cannot reproduce this on Mac OS X 10.6.4, in either 64 bit or 32 bit mode.
It still fails with Flash 10,1,53,64 for me. When I downgraded to 10,0,45,2, "What's New" started working again. I have a non-customized version of "What's New" in Yahoo. With the older version of Flash, I see a video ad in the right-most column that appears to be a contributing factor to this problem. Make sure that you *really* have the new version (10.1) of Flash installed with the version of WebKit that you're testing to see this problem. It seemed that if I started WebKit named differently (i.e., WebKit-current), that the Flash update didn't recognize it and update it to AF 10.1.
Problem no longer exists and hasn't for some time.