linux build 2001021921 (stumbled upon it in earlier builds, too), squid-2.3.STABLE2-2.1mdk as http proxy. with proxy on, load attached testcase. reload it, probably several times, until you see the right image shifting outside inner and even outer table, like on attached screenshot. without proxy, testcase always renders correctly. this happens even if i save html to local drive and open it using 'file://' url, meaning that there's something wrong with images loading through proxy. another note: if you press 'Enter' in location bar to reload testcase instead of SHIFT-CTRL-R or SHIFT+Reload button, page will render correctly. my testcase was taken from www.m3dzone.com, where i first saw this.
I can see this, too, with Mozilla 0.8 on NT4 (marking all/all). I'm using a proxy but haven't tried without one. For me the rendering was wrong only when loading the attachment for the first time, after that it didn't happen again, even after clearing the cache. Trying Layout component, don't know if that really has something to do with the proxy configuration.
Hmm. I wonder if a slow modem connection will cause this as well? My guess is a timing issue more than a proxy issue, especially considering it has to do with images (and I know images that come in very slowly or very fast act differently, at least pre-libpr0n). Will investigate, but would like help trying to create a testcase that reproduces this without a proxy, if it is possible. I was thinking that maybe the images could be pulled from a bugzilla query or something...
i can't reproduce it anymore using 2001051521 nightly linux build.
Marking verified per last comments.