Hello,
I found some pictures on the web, the pads are not populated and yes it is a short!! I removed the short with some fluxed solderwick and hope nothing is damaged by the short.
Hopefully the M5Stack-team respondes on how that could happen in production and releases the schematics and placement of parts.
Something else that is really odd, on the Keypad there is no bypass capacitor for the Atmel Microcontroller!
Best Regards,
Seppel