craftbukkit/nms-patches/net/minecraft/world/item/ItemSkullPlayer.patch

--- a/net/minecraft/world/item/ItemSkullPlayer.java
+++ b/net/minecraft/world/item/ItemSkullPlayer.java
@@ -51,6 +51,16 @@
             TileEntitySkull.updateGameprofile(gameprofile, (gameprofile1) -> {
                 nbttagcompound.put("SkullOwner", GameProfileSerializer.writeGameProfile(new NBTTagCompound(), gameprofile1));
             });
+            // CraftBukkit start
+        } else {
+            net.minecraft.nbt.NBTTagList textures = nbttagcompound.getCompound("SkullOwner").getCompound("Properties").getList("textures", 10); // Safe due to method contracts
+            for (int i = 0; i < textures.size(); i++) {
+                if (textures.get(i) instanceof NBTTagCompound && !((NBTTagCompound) textures.get(i)).contains("Signature", 8) && ((NBTTagCompound) textures.get(i)).getString("Value").trim().isEmpty()) {
+                    nbttagcompound.remove("SkullOwner");
+                    break;
+                }
+            }
+            // CraftBukkit end
         }
 
     }