Odd Render Behavior in List with HorizontalGroups

Given this simple list of serializable class instances:

public class ListTest : SerializedMonoBehaviour
{
    public List<DemoContainer> Containers = new List<DemoContainer>();
}

[System.Serializable]
public class DemoContainer
{
    [HorizontalGroup("Demo")]
    public int a;
    [HorizontalGroup("Demo")]
    public string msg;
}

Odd scaling behavior can be observed during the first few Draw ticks after adding a new element:

Thanks! This is fixed in the upcoming patch.