Congrats, the v21 seems to be very fast. UI is very responsive and web browsing has been improved a lot. Also, I really like the fact that now when an error occurs, the prompt message gives some details on the issue.
Anyway, I report a bug I found in my case. I have 3 APX 320 in mesh and they do not appear in the list.
I created the mesh after the v21 upgrade.
The mesh works as expected, only the list is empty.
I have seen this issue years back in one of the beta version. Regards