If you have the default sidebar on Ubuntu 12.04 and a 2560-pixel wide screen, and give Chrome exactly half of the width (I have a grid plugin), some Wikipedia pages will resize themselves about 15 times a second as they realize that they should change their layout, but then the change means that they should shrink down to the previous version, and then that change... can't find one that triggers that or I'd link to a video.
Seen this kind of epilepsy in Gmail chat frame too. For me it means these modern web apps are going against the grain of html and should just learn to live within the constraints of the browser.
Moreover, once this animation problem will be be solved and kids will be able to do it in a snap, it will not be cool anymore and we'll go back to static, just as flat ui came as soon as shades were done easy.
