All addon items located in the equipment section disappearing from the game.

The world sometimes does not load items from the addons' equipment tab, such as armor and equipment.

In the first video the addon works perfectly.
https://1drv.ms/v/s!AuH_yRVUqkr8iA73orKbCgV00W4c?e=JjipXV
In the second video (in another world) the world does not load the equipment section.
https://1drv.ms/v/s!AuH_yRVUqkr8iA94_8CAKbsfSWNG?e=jDMf1o

PS:

1: I tested with several addons and they all show the same error.
2: It's not just an error in the inventory, it's as if the game simply didn't load that section
3: Both videos I used the same addon

4: ADDON used for videos: More Ores Addon Minecraft 1.20.41+ (attached below)

Link of mcpdl: https://mcpedl.com/more-ores-add-on-minecraft/