Group/Boxes Break when pointing back from Group 2 to Group 1

[srquinn21]

Take the canonical example on mermaid for groups:

sequenceDiagram
    box Purple Alice & John
    participant A
    participant J
    end
    box Another Group
    participant B
    participant C
    end
    A->>J: Hello John, how are you?
    J->>A: Great!
    A->>B: Hello Bob, how is Charley?
    B->>C: Hello Charley, how are you?

Add C->>A: Respond at the end and the boxes break and overlap like in the following screenshot:

The expectation is that it would render like in mermaid: