I'm still driven absolutely mad by how many devices are being released in 2026 that refuse to charge if they're connected to a port that negotiates USB Power Delivery. They don't fall back to 5V, they just don't charge at all.

Devices like this usually come with an A-to-C cable in the box and that's a warning sign, but an even more twisted version of this is when they come with a C-to-C cable and a Type C charger that does not support PD. That's the only combination they tested, and that's your problem now.

I now carry enough adapter cables that I can deliberately take PD out of the equation just to work around these devices.