Mixing subgraph self-reference with references to inner nodes fails to render

[CraigYoung-iress]

Describe the bug
When using subgraphs:
If you mix a self-reference link on the subgraph, with a link to an internal node of the subgraph, the entire graph fails to render.

To Reproduce
This was tested using Mermaidv8.13.5 Live Editor

In the following flowchart definition, 2 lines are commented out.
Uncommenting either renders as expected.
But uncommenting both at the same time fails to render.

flowchart
    subgraph AA
        A1
        A2
    end
    %%EXT --> |Ref to within Subgraph|A1
    %%AA --> |Self-ref Subgraph|AA

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Expected behaviour
The expectation is that in the above flowchart, uncommenting both lines should render correctly.
That is with an arrow from EXT to A1
And and arrow from subgraph AA back to itself.

Screenshots
Not needed, reproducible with the live editor.
(The issue also manifests with VS Code Plugin: Markdown Preview Mermaid Support
v1.13.0)

Code Sample
Provided above.

Desktop (please complete the following information):

• OS: Windows 10
• Browser Chrome Version 96.0.4664.45 (Official Build) (64-bit)

[SamHasler]

github is now rendering the graph. What was the graph's code?

[dwhelan]

      flowchart
      subgraph AA
          A1
          A2
      end
      EXT --> |Ref to within Subgraph|A1
      AA --> |Self-ref Subgraph|AA

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Seems to work now. I think this can be closed.

[nirname]

The graph code was

flowchart
    subgraph AA
        A1
        A2
    end
    EXT --> |Ref to within Subgraph|A1
    AA --> |Self-ref Subgraph|AA

@CraigYoung-iress thanks for reaching out. This seems to work now. Let us know if you still facing this issue