If you place down an Iron Chest subblock (anything except the normal Filtering Iron Chest), then save/reload the game, the filtering chest will not load facing the correct direction, it will no longer render the 2nd pass and if you try to open it, it will throw an IndexOutOfBoundsException (from net.minecraft.inventory.Container.putStacksInSlots -> getSlot). It's also impossible to open the filter GUI.

The standard Filtering Chest and Filtering Iron Chests work fine, but Gold, Diamond, Obsidian, etc do not.