Some items are invisible or render incorrectly in the loot table preview

[Apollounknowndev]

Invisible items (incomplete list):

• beds
• shields
• skulls and heads

Missing item colors:

• tipped arrows
• potions
• spawn eggs
• leather armor
• firework star
• mangrove leaves
• filled map

[Apollounknowndev]

Skulls do not render either.

[misode]

This affects all block entities, or items using special entity renderers

[catter1]

Not sure if more examples are needed, but found it also applies to potions. Uses this loot table for example:

{
  "type": "minecraft:entity",
  "pools": [
    {
      "rolls": 1,
      "entries": [
        {
          "type": "minecraft:item",
          "name": "minecraft:potion",
          "functions": [
            {
              "function": "minecraft:set_potion",
              "id": "minecraft:fire_resistance"
            }
          ]
        }
      ]
    }
  ]
}

[misode]

Part of this issue has been implemented in b165d551e4cd8f4db0051e04c412a9f8a44307ce. A loot table demonstrating this: https://misode.github.io/loot-table/?share=oQTVAdG5qr