For the next person that sees this the issue is right here.

https://github.com/BrandonRoehl/didchange/blob/main/didchange/TestView.swift#L50

The text view is re-initilized when a Coordinator needs to be set for the state and hold the delegates that need to fix it. https://github.com/BrandonRoehl/didchange/commit/1a9a111c0063c633604a982683a99c9ff476fe63

changing

let delegate = TestDelegate()

into

public func makeCoordinator() -> TestDelegate {
    return TestDelegate()
}

sad to admit how many days this took to figure out but hope this helps someone else