Wi-Fi WPA3 (and Wi-Fi 6E which requires WPA3) use a new authentication and key management mechanism called Simultaneous Authentication of Equals (SAE).
This mechanism is further enhanced through the use of SAE Hash-to-Element (H2E)

SAE H2E is mandatory for WPA3 and Wi-Fi 6E.

SAE H2E is not supported in the versions of Network Manager (1.30.0), or WPA_Supplicant (2.9) provided with Ubuntu 21.04.

As far as I can determine, the only way Ubuntu can currently support WPA3 and Wi-Fi 6E is by building WPA_Supplicant from the developer's source, disabling Network Manager, and manually setting the network configuration in a wpa_supplicant.conf file.

I tried to determine the origin of Ubuntu's Network Manager, and found this site (which was linked from Ubuntu's help page). The last code change seems to be in 2018. The "Choose your Ubuntu Version" drop down has Ubuntu 12.04 as the latest.

Has Network Manager development moved? Where could I go to get involved, or at least file a bug report? Or is there another approach to obtain SAE H2E support?