The function run through the `run_command` entity effect type runs in the wrong dimension / always in the overworld.

To reproduce, download the attached datapack and add it to a world. Then follow these steps.

1. give yourself a pickaxe
2. enchant this pickaxe with the test enchantment using /enchant @s test:test while holding it in your hand
3. make sure you're in survival mode
4. hit a nearby block. Observe how you get teleported to that block.
5. go through a nether or end portal
6. hit any block there
7. observe how you're getting teleported to the corresponding block in the overworld instead.

All the function does is this:

tp @s ~ ~ ~