Bedrock blocks not showing

Do you mean that when you place your block down it’s invisible, OR do you mean that you can’t find it in the creative inventory, OR do you mean it doesn’t naturally generate?

Please provide more information.

Make sure you enabled experimental gameplay and cheats for the given world and that you selected your addon (bp and rp) in the world menu.

Solution I am using in case anyone is still running into this problem.  I edit the JSON configuration to add in "minecraft:creativecategory" and this added the block to the inventory.  In the example below the block is just placed into Contstruction, but you can put it where ever you want.

{
  "format_version": "1.17.0",
  "minecraft:block": {
    "description": {
      "identifier": "test:test_block",
      "is_experimental": false
    },
    "components": {
      "minecraft:block_light_emission": 0,
      "minecraft:destroy_time": 1,
      "minecraft:explosion_resistance": 10,
      "minecraft:friction": 0.6,
      "minecraft:creative_category": {
          "group": "itemGroup.name.Construction",
          "category": "Construction"
      },
      "minecraft:flammable": {
        "flame_odds": 0,
        "burn_odds": 0
      }
    }
  }
}