What I expected to happen was...:
The attributes were suppossed to keep after going back from End
What actually happened was...:
The attributes actually reset after going back from End
Steps to Reproduce:
1. Use "/attribute" command for example like this: "attribute @p minecraft:generic.max_health base set 40"
2. Return back from End after defeating Ender Dragon
3. All attributes reset back to original. Something interesting about it is that how many HP you had is still visually visible, but it is actually reset
Linked issues
Comments

Even though it is a duplicate, it actually shows how to correctly do this. MC-181604 is actually a story of what happened.

But it has a Mojang Priority

I already know this. So I shouldn't make this thread.

@unknown please don't trash your reports just because they were resolved
Duplicate of MC-181604.