Lenses can't be created for classes with private constructors for Scala 3

Hello,

I've noticed that the code that compiles and works fine in scala 2 doesn't work for scala 3.

Scastie:
Scala 2 -> https://scastie.scala-lang.org/FmuLKaM0TpmNvQ3xHdpUSg
Scala 3 -> https://scastie.scala-lang.org/7FBOxnIPQbemh5TomJrUig

Code:

import monocle.syntax.all._

case class A private (field1: String, field2: String)
object A {
  def apply(field1: String, field2: String): A = new A(field1, field2)

  val copiedObject = A("1", "2").copy(field1 = "3")
  val modifiedObject = A("1", "2").focus(_.field1).replace("3")

  println(copiedObject)
  println(modifiedObject)
}

val copiedObject = A("1", "2").copy(field1 = "3") //compile error
val modifiedObject = A("1", "2").focus(_.field1).replace("3") //compile error
println(copiedObject)
println(modifiedObject) 

Error:

missing argument for parameter field2 of method copy in class A: (field1: String, field2: String): Playground.A
method copy cannot be accessed as a member of (from : Playground.A) from module class Playground$.

Could you please clarify whether it is expected behavior?

Start with the two linked Scastie reproductions and compare the Scala 2 and Scala 3 compiler errors for the private case class A example. Then inspect Monocle's Scala 3 lens syntax or derivation entry point; the issue names no repository files or tests. Done means determining whether the behavior is expected and documenting or correcting the supported behavior.