The bug

A few of the new loot tables have some typos that prevent given items from spawning. They are as follows:

bastion_bridge / bastion_hoglin_stable / bastion_other

• References basalt and polished_basalt instead of basalt_block and polished_basalt_block (the loot table is correct here, not the game: MCPE-65390)

bastion_bridge / bastion_other / bastion_treasure

• References spectral_arrow which doesn't even exist in Bedrock Minecraft

bastion_treasure

• References magma_block (Java name) instead of magma (Bedrock name)

ruined_portal

• References gold_nuggets (with an extra S) instead of gold_nugget
• References golden_horse_armor (Java name) instead of horsearmorgold (Bedrock name)
• References fire_charge (Java name) instead of fireball (Bedrock name)

How to reproduce

1. Find one of the chests that contains one of the mentioned loot tables
2. Open it (or clone it elsewhere to try multiple times)
→ None of the mentioned items are present