Sizebox stays at Min Desired Height in ScrollBox

I am trying to have a dynamic list of (what is essentially) buttons fill the length of a Scrollbox but cannot seem to get it to work properly.

Here is what my button looks like, with a very simple SizeBox>Button>Text hierarchy and following is what it looks like when I open the game.

If all worked as expected, it would be supposed like below and the size should shrink until I hit the min size. Then the scroll list would kick in.

I feel like I’m forgetting something simple. Anyone know what it could be?

PS: I’ve tried using a vertical box in the Scrollbox to no result.