https://techcrunch.com/2019/07/09/the-raspberry-pi-4-doesnt-work-with-all-usb-c-cables/

The Raspberry Pi 4 is a great little beast, but Tyler Ward identified a flaw in the USB Type-C connector. The Raspberry Pi Foundation confirmed to TechRepublic that the design flaw is real, and that your Raspberry Pi 4 might not work with all USB-C cables.

It’s not really a dealbreaker, but you can expect a future board revision with a proper implementation of the USB-C protocol. But if you find yourself scratching your head and you don’t understand why your Raspberry Pi is not powering up, now you know why.