9.32 is now released as new "stable" firmware (no longer in beta).
I have only had one one bug with 9.32. When using the policy of blocking DHCP servers by default (so that you have to white list allowed DHCP servers), and you have a VLAN that the Meraki switches have no layer 3 interface in, and you have another non Meraki device acting as a DHCP relay for that VLAN into another VLAN that does have a L3 Meraki interface in - you can not whitelist the non-Meraki DHCP relay MAC address (when you click save it fails to save just that one MAC address), and the switches incorrectly block DHCP in that VLAN.
A pretty rare case, so I doubt that others will run into it.