Why do VDD and VSS pins overlap in KiCad for this part PIC16F18777-I/P?

Hello there,

Thank you for patiently waiting. Upon checking, it seems that you have your KiCad expanded pin feature disabled which is why you see pins VDD and VSS overlapping 2 pins.

Kindly check out our article here for more information and guide on how to enable KiCad expanded pin feature: https://support.snapeda.com/en/articles/3161304-how-to-customize-your-downloaded-schematic-symbols-for-kicad

Let me know if you have any questions about it.

Thanks,
Faust