final case class Foo(name: String)
object Foo {
 object Foos {
 val Name1 = Foo("Apple")
 val Name2 = Foo("Banana")
 val Name3 = Foo("Cherry")
 // Using explicit `new`s prevents the issue
 // val Name1 = new Foo("Apple")
 // val Name2 = new Foo("Banana")
 // val Name3 = new Foo("Cherry")
 }
 val allFoos: Seq[Foo] = {
 import Foos._
 Seq(Name1, Name2, Name3)
 }
}
object Main {
 def main(args: Array[String]): Unit = {
 println(Foo.Foos.Name1)
 println(Foo.allFoos)
 // Accessing in the reverse order (or not accessing Name1 at all) prevents the issue
 // println(Foo.allFoos)
 // println(Foo.Foos.Name1)
 }
}

Foo(Apple)
List(null, null, null)

Foo(Apple)
List(Foo(Apple), Foo(Banana), Foo(Cherry))