This bug report is a parity issue with Java.
Summary:
In Java version, copper oxidation is now a random tick effect and thus affected by the randomTickSpeed gamerule. In the bedrock version, the randomTickSpeed does not affect copper oxidation.
Steps to Reproduce:
Place copper blocks.
Set the randomTickSpeed rule to maximum (4096).
Observed Results:
Copper will not oxidize.
Expected Results:
The copper will oxidize. (in the Java version, with the same value (4096), copper will oxidize in the first steel already in the first minute)
affects 1.16.210.61