regression: Adding "jar" execution to the parent of a multi-module javadoc plugin causes "recursive invocations" error

I have a multimodule project with the javadoc plugin declared in my parent.

<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-javadoc-plugin</artifactId>
<version>2.3</version>
<configuration>
<aggregate>true</aggregate>
</configuration>
<executions>
<execution>
<id>attach-javadocs</id>
<goals>
<goal>jar</goal>
</goals>
</execution>
</executions>
</plugin>

After upgrading to 2.3 and do a build I now get the error:

[WARNING] Removing: jar from forked lifecycle, to prevent recursive invocation.
[INFO] No goals needed for project - skipping

Which then skips the processing of that module and later gives me dependency errors because previous dependencies were not compiled.

If I remove jar processing from my plugin definition everything works fine except no javadoc jars are created.