While stumbling through another MVC 4 app with Visual Studio, I noticed that despite all things appearing correct with my data binding, when clicking edit on a model with date fields, the dates were not displayed by Chrome although they were displayed by FireFox and the values were correctly set in the input control.
It turns out that Chrome only likes ISO style dates (e.g. 2014-08-19) and if they are not in that format, they are both not displayed and the original values are not even posted back so you get validation errors!
By adding the DisplayFormat attribute to the date fields and setting it in ISO format, it all worked again.
Note that the DisplayFormat is a generic attribute, it is not just for dates. This means the format has to match String.Format and include curly brackets like this: