It's sad they're going to "fix" this. From the comments, it seems the only reason to support navigating to 0.0.0.0 is because some people got used to using that and they're getting confused or don't want to change their habits. This is the kind of accumulating crud that makes web browsers the ugly monsters they are, but it's not even of the important type like supporting non-standards-compliant websites. Imagine how the world would be a slightly better place if the Chrome guys asked Firefox etc to stop supporting 0.0.0.0 too, then people will stop blaming the browser and change their behavior.