I welcomed the new fucntionality for creating and editing groups from lovelace (or should I say dashboard ui??) however it appears I can only group together entities that are the same type. Specifically you are prompted in the UI to select the type of group and then only have the option to group that entity type. In my groups in YAML I can group together switches and lights for example.
If this is how its intended to be its a bit annoying because in my curent groups in YAML I can have for example my TV and the TV room lamps in the same group and turn them on altogether.