The latest version of Chrome mangles URLs by default, ostensibly to "simplify" them. Among other things, it strips off any leading "www." from the contents of the address bar. If you'd rather not have it do that, toggle the omnibox-ui-hide-steady-state-url-scheme-and-subdomains flag, as described in the linked article (browser restart required).
They've also changed the style of the tab bar. The new design is ugly, and the tabs take up too much vertical screen real estate. Haven't found a fix for that yet.