Affects PMD Version: 7.19.0

Rule: EnumComparison
https://docs.pmd-code.org/pmd-doc-7.19.0/pmd_rules_java_bestpractices.html#enumcomparison

Description:

Code Sample demonstrating the issue:

This is reproducible as,

assertThat(new Object().equals(null)).isFalse();

Expected outcome:
Only enums should be reported on and null should not be assumed to be an enum.

Running PMD through: Gradle