Why is zoomin storyview not workiing in my custom substory tiddler created as deck for cloze cards or tiddlers

I am creating a custom spaced repetition system for revising cloze cards or tiddlers. For this I made a deck using substory concept.
In this deck tiddler, zoomin storyview is not working as intended. However classic and pop storyviews are working well. When zoomin view is used, once I close the first tiddler in the substory, rest of the tiddlers are not automatically populated into the substory. In the substory example given in the tiddlywiki.com also the zoomin view is working. But it is not working in my deck tiddler.
Here is a sample deck using zoomin storyview.
Here is a sample deck using pop storyview.