[java] A false positive about the rule RedundantFieldInitializer

[Zustin]

Affects PMD Version:6.47.0

Rule:RedundantFieldInitializer

Please provide the rule name and a link to the rule documentation:
https://pmd.github.io/pmd-6.47.0/pmd_rules_java_performance.html#redundantfieldinitializer

Description:
In the following code example, I found a FP. Line 3 is not a redundant initializer, but it reports a warning.

Code Sample demonstrating the issue:

public class FP {
    private static final int BASE = 1;
    char c = 0 + BASE;  // should not report a warning in this line
}

Expected outcome:

PMD reports a violation at line 3, but that's wrong. That's a false positive.

Running PMD through: [Maven]