Upgraded two devices today from 22.03.2, kept configuration, no issues so far:
Netgear R7800:
Pretty vanilla configuration: Main home router hanging off the residential ISP. Divides the ISP-supplied IPv6 PD across the house networks. 2 APs and 1 mesh point on the 2.4GHz radio, 1 AP on the 5 GHz radio.
Buffalo WZR-HP-AG300H:
Probably a more "interesting" configuration: Mesh point on the 2.4 GHz radio, layer 2 bridging with the wired LAN. Essentially a wireless bridge for anything connected to its wired side, currently only a printer. The layer 3 logical network interface on this bridge is configured as the router's upstream/WAN in terms of firewall etc, and is a DHCP client to the Netgear.
The physical WAN port on the other hand is configured as a "LAN", including providing DHCP service. Essentially a fallback device management interface in case the Netgear and/or the mesh misbehaves.