Code:
public static void main(String argv[]) {

    R e = new R("one"); //this is the problematic call

}

record R(String p, String q) implements Serializable {

    public R(String p, String q) {
        this.p = p;
        this.q = q;
    }

    public R(String p) {
        this(p, "null");
    }
}

Error:
  Location:
    Main$R.<init>(Ljava/lang/String;Ljava/lang/String;)V @0: aload_0
  Reason:
    Invalid use of strict instance fields
  Current Frame:
    bci: @0
    flags: { flagThisUninit }
    locals: { uninitializedThis, 'java/lang/String', 'java/lang/String' }
    stack: { }
  Bytecode:
    0000000: 2a2b b500 012a 2c12 07b6 0009 9900 0812
    0000010: 0fa7 0005 1207 b500 112a b700 14b1
  Stackmap Table:

        at Main.main(Main.java:11)