I just did a fresh install of MAAS and ran into the same issue. My LXD is also a fresh snap install. Have you been able to resolve this issue in anyway?
I doubt this is related because as you can see in the screenshots, cpu/ram is unknown but it gathers the storage type and size correctly (in the detailed view) so I suppose the communication works but some items are just not retrieved correctly.
@sat01- When you have a moment, and if you have this info available to you, post the redacted content of your lxd init
This will help in determining if there are any hurdles presented by the choices made during init, especially in comparison to the example setup provided in the documentation linked below