`Cyclic reference involving module class` in Scala3 but compiles in Scala2

Compiler version

3.0.0-RC1, 3.0.0-RC2

Minimized code

https://scastie.scala-lang.org/6NSAUSm4Qo2Y9NJbLQrxWw

Output

Cyclic reference involving module class JsonReaderDefaultValue$

Expectation

Successful compilation.

Does not reproduce when dependent code is copy-pasted to the same Scastie session.

[griggt]

Self-contained:

JsonReaderDefaultValue.scala (compile with Scala 2.13)

object JsonReaderDefaultValue extends LowPriorityDefaultValue {
  class ReaderDefaultValue extends scala.annotation.StaticAnnotation
}

trait LowPriorityDefaultValue {
  @JsonReaderDefaultValue.ReaderDefaultValue
  class NoDefaultValue
}

Test.scala

object Test {
  JsonReaderDefaultValue
}

[smarter]

If you can’t minimize it, it can still be helpful to open an issue if you can provide a reliably way to reproduce the problem (e.g. a branch of a git repo and the command used to compile the code).