A DESCRIPTION OF THE PROBLEM :
I think I found a javac bug which is reproduced on Java 9/10/11, but not on Java 8.

I created a repository with a minimal, reproducible and verifiable example: https://github.com/orionll/javac-bug

There are three Java files:
org/example/Common.java (empty file)
org/example/impl/Common.java
org/example/impl/Util.java

Util.java imports org.example.* and refers to a Common.X field. This is a totally legitimate code, but javac fails with an error saying that org/example/Common.java does not contain a class org.example.Common (it doesn't have to).

REGRESSION : Last worked in version 8u202

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
mkdir bin
javac -sourcepath src src/org/example/Common.java src/org/example/impl/Common.java src/org/example/impl/Util.java -d bin

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The files successfully compile
ACTUAL -
src\org\example\impl\Util.java:7: error: cannot access Common
        System.out.println(Common.X);
                           ^
  bad source file: src\org\example\Common.java
    file does not contain class org.example.Common
    Please remove or make sure it appears in the correct subdirectory of the sourcepath.
1 error

---------- BEGIN SOURCE ----------
// src/org/example/Common.java
package org.example;

// src/org/example/impl/Common.java
package org.example.impl;

final class Common {
    static final int X = 42;
}

// src/org/example/impl/Util.java
package org.example.impl;

import org.example.*;

public class Util {
    public static void f() {
        System.out.println(Common.X);
    }
}
---------- END SOURCE ----------

FREQUENCY : always