working of universal initialization causing destructor to be called one extra time

Question

        #include<iostream>
        #include<vector>

        class test {
            public:
                  virtual ~test() 
                  {
                      std::cout<<"inside destructor \n";
                  }
    
        };
    


        int main()
        {
            std::cout<<"---with universal initializer--------- \n";
            {
             test t1;
             std::vector<test> v{t1};
            }
            std::cout<<"----- ending universal initailizer ----- \n";
    
            std::cout<<"------------------------\n ";
            test t2;
            std::vector<test> v2(1,t2);
    

            return 0;
         }

output:

---with universal initializer---------                                                                                                          
inside destructor                                                                                                                               
inside destructor                                                                                                                               
inside destructor                                                                                                                               
----- ending universal initailizer -----                                                                                                        
------------------------                                                                                                                        
 inside destructor                                                                                                                              
inside destructor

my question is why destructor is called one extra time or extra object is created compared to other initialization when initialization done using universal initialization