Too many occurences for symbol which extends class and pass constructor arguments

[kpodsiad]

related to the scalameta/metals#4423

//> using scala "2.13.8"

object Main extends App {
  case class FooFailure(msg: String) 
    extends Exception(s"Error: $msg")
}

Using Metals: show semanticDB detailed one can see that there are two occurrences which match FooFailure:
[3:13..3:23) <= empty/Main.FooFailure#
[4:32..4:35) => empty/Main.FooFailure# - this matches exactly msg in s"Error: $msg"

It seems like it's an issue with class that extends java one(?). I've tried extending abstract class and everything was working.

[kpodsiad]

Now I've spotted <= and => but I have no idea what does it mean.

[tgodzik]

Actually, one is a reference and the other a definition. Looks like somehow this only happens in a string interpolation. Looks like msg should be a reference to the constructor param in FooFailure, but is instead the object.