Umm, how can I be 14 versions behind when I have built the jar within the past few minutes?

Anyway, without anything in my inventory.
When I do 

// code placeholder

//Check extra
if (player.getInventory().getExtraContents() != null)

//Check all armor (includes shield!)
// if (player.getInventory().getArmorContents() != null) {//This seems to be broken
// player.sendMessage(ChatColor.RED+"You are wearing armor or holding a shield");
// ItemStack[] armors = player.getInventory().getArmorContents();
// for (ItemStack armor: armors)

// player.sendMessage(ChatColor.GOLD+"You must remove all of your armor first");
// return true;
// }}

The return is allways ExtraContents == true!
I have been developing in 1.21.4, but the problem remains the same in 1.21.5.

I know that the API for getArmorContents() should not include ExtraContents, but it is doing just that, even when there is nothing in the players inventory.