Toolbar button styles get ignored?

Question

I have buttons on a toolbar in WPF.

When I do the XAML:

                     
        
        

          

            
            

              
              

            
    


                                 
              
            
                          
    

        
         

                验证码
                

                  
                
                

                   看不清?
                
              
                                  

                    
   
                 
             
              
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