Hey there,
In this post you can find the list of known bugs affecting the latest supported releases. Please check them before asking for help. This list will be updated every time there are important bugs that might affect multiple users.
3.6.1
No hot bugs.
For the full list, please see 3.6.x : MAAS
Unpatched bugs affecting multiple releases (including latest)
Upgrading a single HA region to a minor release may hang and break the deployment temporarily
MAAS creates a redfish user without sufficient permission in iDRAC 9
For the full list, please see Bugs : MAAS