Aura Component and JS Controller and Helper files are not resolving the API names of custom object  and custom fields

In one of our Partner Dev Org, I am working on an application, after development and testing, I created a managed package

The steps I followed:

• Developed code(Aura components, Apex Controllers) and created custom objects
• After testing, Created unmanaged package and deployed in sandboxes and tested and working fine. 
  • Observed that Lightning component with lightning datatable is displaying data in all columns
• Created managed released package by defining namespace and also chosing the above already tested unmanaged package. It created managed package successfully
  •  Observed Lightning component with lightning datatable is not displaying data in non of columns
  • It even didn't work in Package Development Org(Partner Dev Org)
  • It didnt work in subscriber org

I am able to locate and find the root cause of the issue after spending 4 hours today:
The root cause is: 
Aura Component and JS Controller and Helper files are not resolving the API names of custom object  and custom fields

Sample Code blocks from Application Code:

Component

<aura:attribute name="addrList" access="global" type="Account_Address__c[]"/>
<aura:attribute name="filteredAddrList" access="global" type="Account_Address__c[]"/>

 

<lightning:datatable data="{!v.filteredAddrList}"                              
                             class="slds-m-top_medium"    
                             columns="{!v.columns}"                             
                             keyField="addressUniqueNumber__c"  
                             selectedRows="{!v.existingAddresses}"
                             sortedBy="{!v.sortedBy}"
                             sortedDirection="{!v.sortedDirection}"
                             onrowaction="{!c.navToMap}"
                             onrowselection="{!c.rowSelection}"
                             onsort="{!c.updateColumnSorting}" />

Javascript Controller and Helper code:
 

var actions = [
            { label: 'Details', name: 'show_details' }
        ]; 
        component.set('v.columns', [    
            {label:'Street', fieldName: 'Street__c', sortable : true, type:'text', initialWidth: 300, sortable: true},            
            {label:'City', fieldName: 'City__c', type: 'text', initialWidth: 300, sortable : true}
        ]);

 

var selectedRows = component.get("v.existingItems");
        selectedRows.forEach(function(item){            
            var newRequest = {
                Street__c: item
            };
            newRequest.sobjectType  = 'Account_Address__c';
            items.push(newRequest);
        });

Above code snippets refer below custom objects and custom fields:

Custom Object: Account_Address__c
Custom Fields: addressUniqueNumber__c, Street__c, City__c

Workaround: I did the changes and added package namespace prfix to all above custom object and fields names. Then the issue got resolved and the data is displayed in table.

addrverifyx__Account_Address__c
addrverifyx__addressUniqueNumber__c, 
addrverifyx__Street__c, 
addrverifyx__City__c

It worked fine in both Package dev org and subcriber org. I dont this is the correct solution. There may be some other reason it is not working.

I searched many salesforce expert developer community forums and I didnt find the similar issues.

Is this the correct solution? 
Why it is failing to resolve the api names?