Summary:

Copper ore is found after the nether ores in the creative inventory, not after the ores of the upper world / among the ores of the upper world.

Steps to Reproduce:

1. Change the game mode to creative.
2. Open your creative inventory.
3. Find copper in the "nature" tab or in the "all" tab.

Observed Results:

Copper ore is in after the ores of the nether world.

Expected results:

Copper ore will be among the ores of the upper world.

Image:

Nature tab

All tab