Can a wrong crystal oscilator capacitor burn the MCU?
the fire (yellow glow light with smoke) started in the vicinity of the MCU's internal regulators pins, which are just on the side of the oscillator pins.


This is why labratory power supplies have a current limiter...

You have a very strong short, most likely a VCC pin connected to GND or a GND pin connected to VCC. Shorting a GPIO usually does not (much) damage because of R_DSon in the GPIOs driver. Triple-check your schematic an layout for errors with power pins.