Vertical Container Not Scrolling in Power Apps

I have a Power App with a vertical container that contains two other vertical containers. However, the parent container does not scroll when the child containers exceed its height. I have tried setting a fixed height for the child containers, checking the z-order of the child containers, and setting a fixed height for the parent container, but nothing has worked. Can someone please help me troubleshoot this issue and provide a solution?

Thank you.