Cobertura plugin seems to create empty target/site/index.html, preventing maven from creating content for the page

When running 'mvn site', the Cobertura plugin appears to create empty index.html in target\site\.

When maven attempts to create the "About" section of the website, it notices the index.html already exists and skips this step.

The problem is resolved either by disabling the Cobertura plugin, or by reverting to version 2.4.

This is the corresponding configuration for Cobertura:

<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>cobertura-maven-plugin</artifactId>
<version>2.5</version>
<configuration>
<formats>
<format>xml</format>
</formats>
</configuration>
</plugin>