Preview significantly differs from layout editor

I built out a screen in the layout editor using all the recommended conventions, and then checked out my code and everything looks good; however, when I deploy, the preview looks completely different from the layout editor (and different from even the dimensions defined in the code). For example, many elements are squished or stretched, and scrolling doesn’t work. I attached a comparison below:

@aadhrik Could you please paste your app share link here?

We are currently building in this app, so the screens may change. Let us know though if you want us to leave it alone.