I have a strange problem, let me explain you the scenario :

1) I have installed a managed package with namespace (ankit), it includes a object name Sling and two recordtypes "test1" and "test2".

2) Now I have done some custom development on my personal org where I have installed that package. I have created a test class which looks something like this :

@isTest
private class MyTestClass
{
    private static testmethod void testM()
    {
        ankit__Sling__c s = [select id from ankit__Sling__c limit 1] ;
        System.debug('s :::::: ' + s) ;
        
        List<RecordType> rt = [select id from recordtype where sobjectType = 'ankit__Sling__c'] ;
        System.debug('rt ::::: ' + rt) ;
        
        List<RecordType> rt2 = [select id from recordtype] ;
        System.debug('rt2 ::::: ' + rt2) ;
        
        System.assertEquals(rt.size() , 2) ;
    }
}

3) Now I simply create another package which is unmanaged and include this test class in it, automatically package object sling and its record types are included. Now I have created a package(Unmanaged), and its done successfully. Now I am checking the debugs it gives me proper data (two record types are returned in test class and assert is passed).

Note : Till now I have not create a namespace for my organization.

4) Now what I have done is created a namespace on my organization and try to upload the same package(unmanaged) again. This time my test class get failed and the problem is no record type is returned whose sobjecttype is 'ankit_sling__c'.

My second debug

System.debug('rt2 ::::: ' + rt2) ;

 returns two record type which is expected, just wondering why these record types are not returned when I am putting where clause condition "where sobjecttype = 'ankit_sling__c' "

Is this is a bug??? I have tried this on multiple orgs and faced same problem everywhere.

Any directions over this will be great.