Property in default-value is not replaced when using automated mode

In archetype-metadata.xml I have:

<requiredProperty key="package">
	<defaultValue>${groupId}.${artifactId}</defaultValue>
</requiredProperty>

This default value is used correctly when using mvn archetype in interactive mode, but it is used incorrectly when using mvn archetype -B. In that case, the value of package is literally ${groupId}.${artifactId} with no replacement.

To reproduce, type:

mvn -B archetype:generate -DarchetypeGroupId=io.github.oliviercailloux -DarchetypeArtifactId=java-se-1.8-archetype -DgroupId=mygroupid -DartifactId=myartifactid

then ls a/src/main/java/. Observe that the directory is literally ${groupId} instead of the expected mygroupid.

This archetype is published to Maven Central and its source code is here.

Possibly related: 490, comment of 397.