Input value doesn't display. How is that possible?

Argh. I knew this was going to be something beyond stupid. There was a bit of Javascript that was clearing data. The clearing was useful in other places, but I didn't know it was executing so it was a serious pain to track down. Once I prevented the clearing in this scenario, my values actually appeared. Because I was looking at the code in web inspector, I assumed that it would be a "live" view, but I guess that's not entirely true.

Thanks for your help, everyone.

For my side, it was a problem only for Firefox.

I resolved by adding the attribute autocomplete="off" in the input field.

<input type="text" value="value must appear" autocomplete="off"/>

Mine was related to AngularJS

I was trying to put both an HTML Value and an ng-Model, thinking that the ng-Model would default to the Value, because I was too lazy to add the Model to the $scope in the Controller...

So the answer was to assign that default value to the $scope.variable in the controller.