Coverage missing on case class (constructor)?

[TimSoethout]

Here is my test project:
https://github.com/TimSoethout/scala-java-maven-code/tree/code-coverage-scoverage
Then I run mvn clean scoverage:report then look at the report in module1/target/site/scoverage/index.html.
The case class TryOut is called in the test case, but the report (and coverage.xml) has no account of the case class line being covered.

Is this by design? Or am I missing something?
Also if I move the class to an object, so no instance of HelloScala is needed, it results in a similar report with no coverage on the case class.