[Bug] binding function to a property.

[tsonevn]

When a function is set up to a property(e.g. Label's text property), the function will be executed twice. For example:
HTML

<Label [text]="testBinding()" textWrap="true"></Label>

TypeScript

   public testBinding(){
        console.log("testBinding"); 
        return "test test";
    }

Archive.zip