False postfix error from parser

[soronpo]

Compiler version

v3.0.0-RC3

Minimized code

@main def main : Unit = 
  val x = 1

  val y = x match 
    case 1 => 1
    case _ =>
      println("bad")
      ???
  println(x)

https://scastie.scala-lang.org/ycgXIOkfQL6SJ6nhFOVTUg

Output

postfix operator `???` needs to be enabled
by making the implicit value scala.language.postfixOps visible.
----
This can be achieved by adding the import clause 'import scala.language.postfixOps'
or by setting the compiler option -language:postfixOps.
See the Scaladoc for value scala.language.postfixOps for a discussion
why the feature needs to be explicitly enabled.

Expectation

No error. The compiler seems to be misreading the indentation of the last println.