Forward reference through type alias goes undetected

[Jasper-M]

scala> class Foo { 
     |   class Bar
     |   def foo = { 
     |     type T = b.Bar
     |     val a = new T
     |     val b = new Foo 
     |   } 
     | }
error: Error while emitting <console>
value b

[SethTisue]

Welcome to Scala 3.2.2 (17.0.6, Java OpenJDK 64-Bit Server VM).
Type in expressions for evaluation. Or try :help.
                                                                                                    
scala> class Foo:
     |   class Bar
     |   def foo =
     |     type T = b.Bar
     |     val a = new T
     |     val b = new Foo
     | 
-- [E039] Reference Error: -----------------------------------------------------
5 |    val a = new T
  |                ^
  |               b is a forward reference extending over the definition of a
  |
  | longer explanation available when compiling with `-explain`
1 error found