Custom inline elements rendered in front of the block instead of being in-lined

[Tad Lispy]

Example here: https://ellie-app.com/42Dm3YR5ZHQa1

Perhaps I don't understand something, but my expectation is that inline should be rendered inside the paragraph, not in front of it. Am I doing something wrong?

[Matthew Griffith]

I believe this is fixed in v2!