Explanation for "Cannot access 'x' in 'y' in multi catch clause when build with Maven

I'm puzzled of the following compiler error "java.lang.Throwable.getMessage() is defined in an inaccessible class or interface" when I catch multiple exceptions, which inherit from same package protected abstract class.

The Maven build fails (Maven 3.8.x on Win/Mac/Unix ), compiling it with javac works.

But if I:

• only catch a single exception -> compiles
• catch multiple exceptions (which inherit from same package protected abstract class) and add another exception (i.e. RuntimeException) -> compiles

Can anyone explain this behavior to me?

Main.java:

package com.foo.service;

import com.foo.utils.ExceptionA;
import com.foo.utils.ExceptionB;

public class Main {

  public static void main(String[] args) {

    try {
      if (true) {
        throw new RuntimeException("RuntimeException");
      }
      if(true) {
        throw new ExceptionA("ExceptionA");
      }
      if (true) {
        throw new ExceptionB("ExceptionA");
      }
    } 
     catch (ExceptionA | ExceptionB e) { // <- won't compile: "Cannot access 'getMessage()' in 'java.lang.Throwable'"
     e.getMessage();
    }
   //  catch (ExceptionA e) {  // <- compiles
   //  e.getMessage();
   // }
   //  catch (ExceptionA | ExceptionB | RuntimeException e) { // <- compiles
    // e.getMessage();
    // }
  }
}

AbstractException.java:

package com.foo.utils;

class AbstractException extends Exception {
  protected AbstractException(final String message){
    super(message);
  }
}

ExceptionA.java:

package com.foo.utils;

public class ExceptionA extends AbstractException {
  public ExceptionA(String message) {
    super(message);
  }
}

ExceptionB.java:

package com.foo.utils;

public class ExceptionB extends AbstractException {
  public ExceptionB(String message) {
    super(message);
  }
}

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.example</groupId>
    <artifactId>foo</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <maven.compiler.source>11</maven.compiler.source>
        <maven.compiler.target>11</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

</project>