world generated without nether/end

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here's a google drive link to my world: https://drive.google.com/file/d/1FzEV_RE_07HMxZlfRwS0d6tSU9ODLH20/view?usp=sharing

for my privacy please refrain from looking into the books in this world (: also tell me when your done so i can remove the link

Thank you. I can't seem to get in the nether in that world either. You mentioned that it's a copy of a world, does it work as expected in the original world?

the world of the screenshot was a creative world copy but this is a backup of the original and all three worlds have the same problem. also not sure if this is helpful but villagers take a very long time to connect to there workbenches, i know that might be completely unhelpful but i wanted to mention that as all both these problems in my experience seem to happen when theres allot of villagers together but it might be a coincidence.

update: made a creative copy were i killed all the villagers, the problem still continues.

Try Changing your game mode to a different game mode 

i tried going in creative and that didnt work, you can download the world and try it yourself.

UPDATE: end portals dont work either as shown in a screenshot.

UPDATE: when i recreate the world the issue persists in the new world

UPDATE:
when i took a look at the world gen for this world i found this code:

 
_{{
  "bonus_chest": false,
  "dimensions": {
    "minecraft:overworld": {
      "type": "minecraft:overworld",
      "generator": {
        "biome_source": {
          "seed": -8350019134654640297,
          "large_biomes": false,
          "type": "minecraft:vanilla_layered"
        },
        "seed": -8350019134654640297,
        "settings": "minecraft:overworld",
        "type": "minecraft:noise"
      }
    }
  },
  "seed": -8350019134654640297,
  "generate_features": true
}}
 
then i made another world completely unrelated to this one (i did not attempt to leave the overworld) and looked at the worldgen export there, heres what i got:
 
^{{
  "bonus_chest": false,
  "dimensions": {
    "minecraft:overworld": {
      "type": "minecraft:overworld",
      "generator": {
        "biome_source": {
          "seed": 432049810964843892,
          "large_biomes": false,
          "type": "minecraft:vanilla_layered"
        },
        "seed": 432049810964843892,
        "settings": "minecraft:overworld",
        "type": "minecraft:noise"
      }
    },
    "minecraft:the_nether": {
      "type": "minecraft:the_nether",
      "generator": {
        "biome_source": {
          "preset": "minecraft:nether",
          "seed": 432049810964843892,
          "type": "minecraft:multi_noise"
        },
        "seed": 432049810964843892,
        "settings": "minecraft:nether",
        "type": "minecraft:noise"
      }
    },
    "minecraft:the_end": {
      "type": "minecraft:the_end",
      "generator": {
        "biome_source": {
          "seed": 432049810964843892,
          "type": "minecraft:the_end"
        },
        "seed": 432049810964843892,
        "settings": "minecraft:end",
        "type": "minecraft:noise"
      }
    }
  },
  "seed": 432049810964843892,
  "generate_features": true
}}
 
notice the lack of the code for the nether and end dimention, this is most likely the issue and ill be looking into the cause soon.

Please check if this is still an issue in 21w03a or later.