Hi, 
I am trying to build a component int Aura lightning framework and I found out that there is a know issue with "force:inputField" tag. force:inputfiled tag for picklist values is disabled by default and I saw some work around to activate it by removing attribute "disabled", but for some reason my not able to achieve it. Need your help to find out  the issue.  here is my Code. 
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test.cmp code: 

<div class="form-group">
              
                <div id="contact_Type" class="col-sm-10">
                    <force:inputField aura:id="contactType" value="{!v.contact.Contact_Type__c}" />
               </div>
           </div>

testController.js : 
({
    init : function(component, event, helper) {
        
              
 
        console.log(' in init : ');
        
    },
    
    newContact : function(component, event,helper){
        
        console.log("in newcontact");
        
        var contact = component.get("v.contact");
        var contactType = component.find("contactType");
        
        contact["Contact_Type__c"] = contactType.get("v.value") ;
        
        console.log("contact firstname : "+contact["firstName"]);
        console.log("contact Type "+ contact["Contact_Type__c"]);
        
        helper.insertContact(component, contact);
        
    }
    
    
})


TestRenderer.js


({
    // Your renderer method overrides go here
    // 
    render : function(cmp){
        
         var ret = this.superRender();
        
         var element = cmp.find("contactType");
        
        
        var contactType = element.getElement();
        
        console.log('contactType has disabled attr ?  '+  contactType.hasAttribute("disabled"));
        
         contactType.removeAttribute("disabled");
       
        return ret; 
    }
})



In the browser console contactType.hasAttribute('disabled'); is comming up as False. So contactType (element) doesnot have that attribute at the time of render. I think the issue is with the order of running "render()" and actual compnent rendering.