On Safari 4.0.4 on Mac OS X, and on Chrome 4 and 5 on all platforms tested, the <select> element behaves strangely when navigating back to a form. To repeat, search in any bugzilla and select a component that you have to scroll down to see. Submit, then click Back. Now look at the component <select> box again. Sometimes nothing is now selected; sometimes the wrong thing is selected; and once I even saw elements missing from the <select> box (but that might have been some other problem). This gets annoying when doing lots of searches in e.g. bugzilla.
I cannot reproduce this in Safari 4.0.4. Opened the bug URL, selected "Printing" component, clicked Search, then clicked Back button left to Safari address bar. I'm doing lots of searches in Bugzilla, and have never seen this.
Dang, I was assuming it was all bugzillas. Try it with http://bugs.winehq.org, that's the one that I run into it on.
I couldn't reproduce this with winehq.org in a few attempts either. Weird!
I was able to reproduce this yesterday with 4.0.4, with the following steps: 1) Go to http://bugs.winehq.org/query.cgi?format=advanced 2) Select "cmd" for the Component 3) Press "Search" 4) Go back Today, on a different machine (but also running 4.0.4) I can't reproduce it. I'll try again on Monday with the original machine.