Hi folks, I have these castellations i've created, and on the top and bottom layers, copper pours will connect appropriately, however, when in a middle layer, the pour won't connect:

Note the green there is a GND pour.
however, on the bottom layer, a GND pour connects as expected:

            
                        
            
                                    
              
                Chrome
                  100.0.4896.75
                OS X
                  10_15_7
                                EasyEDA
                  6.5.1