Phone with Wi-Fi 6 shows up with two IPs and two MACs on my router

I recently got a phone that supports Wi-Fi 6. I’m using the hardware MAC address to connect to my home network and I’ve set up a static lease to give it a “fixed” IP. The thing is, I noticed that my phone actually has two IPs on my router with two different MAC addresses.

Is this a Wi-Fi 6 specific behavior?