All copper bulbs in the trial chamber "eruption" are in their base state. none of them are exposed, weathered or oxidized.

Seeds and coordinates:
1.21.2: -9202887599315359214, 2439 -10 -1472
1.21.30.21: -2275744594652264290, 100 -15 120

Steps to reproduce:

1. Generate world with a seed from the list above
2. Go to the specified coordinates
3. Look at the copper bulbs

Observed result:
All copper bulbs in the room are unoxidized.

Expected result:
The oxidation levels of the bulbs are random, just like in other rooms.