There appear to be a few related issues here:

* annotations on enum constants are not printed
* the implicit constructor for the enum has an illegal call to `super()`

$ cat A.java 
enum E {
  @Deprecated ONE;
}
$ javac -fullversion -printsource A.java
javac full version "14-ea+12-409"
$ cat E.java
enum E {
    /*public static final*/ ONE /*enum*/ ;
    
    private E() {
        super();
    }
}
$ javac E.java
E.java:6: error: call to super not allowed in enum constructor
        super();
        ^
1 error

* additionally, subclasses of abstract enums include invalid synthetic constructors:

$ cat B.java 
enum E {
  ONE {
    void f() {}
  };

  abstract void f();
}
$ javac -fullversion -printsource B.java
javac full version "14-ea+12-409"
$ cat E.java
enum E {
    /*public static final*/ ONE /*enum*/  {
        
        E() {
            super();
        }
        
        void f() {
        }
    };
    
    private E() {
        super();
    }
    
    abstract void f();
}
$ javac E.java
E.java:5: error: invalid method declaration; return type required
        E() {
        ^
1 error