Documenting this as I haven't found this explicitly stated anywhere yet. With SCI 1.1, when creating views, by default the template game wants/expects the following:
loop 0 = cursor view
loop 1 = inventory icon
loop 2 = icon bar
When declaring your inventory items in Inventory.sc, set the loop 1 for the views. I noticed that if you set it to loop = 0, it'll show the loop 0 view the first time you open the inventory screen but any subsequent times it'll display loop 1.