Changes on item JSON files in custom behavior packs don't work anymore with the newest Minecraft Bedrock (MC BE) Beta versions.

For example, changing the duration time of an effect in "golden_apple.json" don't work anymore / won't get registered by the game.
Also changing the item folder name in the behavior pack from "items" to "items_new" won't fix this problem.

This problem does not exist in the 1.16.40 version of MC BE.