You must make sure the pad's net is the same

@UserSupport thnk you for the response. The net should be the same, it's GND pin and EasyEDA shows ribbon line to the pin. I checked it in the Design manager selecting GND net. It's really strange. I upgraded the version of Easy EDA and autorouter and the behavior gets complete different. 

@fedorov, Can you make and post url to a public project that demonstrates this issue?

when you ungroup this part, you will see there are some pads doesn't have same net 

@UserSupport Thank. You are really geniuses !!! I could not even imagine that such a mistake was in the component that I borrowed.

@fedorov, If you find a mistake in a Schematic Symbol (SCHLib) or PCB Footprint (PCBLib), please select it in the Search Libraries tool then Right-click > Report Error. Thanks.

You can report errors in Schematic Symbols directly from the Schematic: