UITest - UICollectionView scrolling issue with horizontal direction when isPagingEnabled true

Question

I've been trying to scroll UICollectionView with horizontal scroll, to the next page when isPagingEnabled property was set as true. I've been working on it for couple of days and I've made a lot of research, but I couldn't find any case like mine. If you already had this problem and if you already found a solution for it, it would be great sharing your solution way with me. Here is my current case;

func sampleTest() {
    let collectionView = app.collectionViews[.sampleCollectionView]
    collectionView.waitUntil(.exists)
    let totalPageCount = collectionView.cells.count
    guard totalPageCount > 0 else {
        XCTFail("No pages could find in collection to take snapshot.")
        return
    }
    for currentPage in 1...totalPageCount {
        snapshot("Page\(currentPage)")
        collectionView.swipeLeft()
    }
}

Here, swipeLeft() method of XCUIElement is not working as expected in my case. When I call the method, it is not moving to the next page. It swipes a little bit and turn back due to isPagingEnabled = true statement.

In addition, there is another problem that collectionView.cells.count is calculated wrong. It always returns 1. I assume that the reason of the problem is about reusability. Because the other cells has not dequeued yet. Or collectionView.cells.count is not working as I guess?