Existence of "hidden" sink prevents Submit button from appearing in Text Input components?

I’m created a Text Input, and my goal is to have it appear when the student has moved a point on a graph to a particular place. So, I’ve used the “hidden” sink to keep the input box hidden initially. It would be nice if students could see other answers, so I’ve also set showSubmitButton to true. But it seems that having the “hidden” sink at all (whether the component is actually hidden or not) prevents a submit button from ever occurring.

I’m just curious if that is the expected/desired behavior.

You may try this


Thanks for the feedback!

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You could add a separate action button. It also has a hidden sink.