Unexpected type mismatch: found Int | Null, required Long

[olafurpg]

object a {
  val x: scala.Any =
    if (true)
      0L
    else if (false)
      (0: Int)
    else
      null
}

reports

-- [E007] Type Mismatch Error: foo.scala:5:9 -----------------------------------
5 |    else if (false)
  |         ^
  |         found:    Int | Null
  |         required: Long
  |
6 |      (0: Int)
7 |    else
8 |      null

I expected it to typecheck since Int, Long and Null are a subtype of Any. scalac does not report an error.

Also, note that the reported position is a bit weird. It gets more confusing inside a pattern match

object a {
  val x: scala.Any = 1 match {
    case 1 =>
      if (true) (0: Int) else null
    case 2 =>
      if (false) 0L else null
  }
}


// reports

-- [E007] Type Mismatch Error: foo2.scala:3:11 ---------------------------------
3 |    case 1 =>
  |           ^
  |           found:    Int | Null
  |           required: Long
  |
4 |      if (true) (0: Int) else null
-- [E007] Type Mismatch Error: foo2.scala:5:11 ---------------------------------
5 |    case 2 =>
  |           ^
  |           found:    Long | Null
  |           required: Long
  |
6 |      if (false) 0L else null

three errors found