This is a really nice effect! And kind of you to share it with everyone.
I’m sad I can’t replicate this in the Drag and Drop interface (there is no way to set a component’s height dynamically using blocks) but at least it works in the Snap to Place one.
There’s a little glitch on my phone when it closes the pop-up. It jumps/flickers a little bit. Not a big deal but since you asked for feedback I thought I’d mention it.