ADDITIONAL SYSTEM INFORMATION :
System:
Ubuntu 22.04.2 LTS on Windows 10 x86_64

Java Runtime Information:
openjdk version "11.0.12" 2021-07-20
OpenJDK Runtime Environment 18.9 (build 11.0.12+7)
OpenJDK 64-Bit Server VM 18.9 (build 11.0.12+7, mixed mode)

A DESCRIPTION OF THE PROBLEM :
Pattern.CASE_INSENSITIVE does not take effect in jdk11, but it can match characters normally when using jdk17

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run included source code.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Pattern.compile("some\\p{javaLowerCase}*Name", Pattern.CASE_INSENSITIVE) can match the value of "someOtherName"

---------- BEGIN SOURCE ----------
import java.util.ArrayList;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class BugReport {
    public static void main(String[] args) {
        Pattern normalisedCamelCasePattern = Pattern.compile("some\\p{javaLowerCase}*Name", Pattern.CASE_INSENSITIVE);
        ArrayList<String> candidates = new ArrayList<>();
        candidates.add("someName");
        candidates.add("someOtherName");
        for (String candidate : candidates) {
            Matcher matcher = normalisedCamelCasePattern.matcher(candidate);
            if (matcher.lookingAt()) {
                System.out.println("success:" + candidate);
            } else {
                System.out.println("fail:" + candidate);
            }
        }
    }
}
---------- END SOURCE ----------

FREQUENCY : rarely