Does Osmorc require Maven Integration?

Hi,

I have the Osmorc plugin enabled and IDEA lets me disable the Maven Integration plugin without issues.
But if I do so and try to make a module with the OSGi facet I get this error:

Error:OSGi in module 'MyModule': java.lang.NoClassDefFoundError: org/jetbrains/jps/maven/model/JpsMavenExtensionService

Is this a bug in IDEA in that it doesn't enforce the plugin dependency or do I have something misconfigured?

From what I can tell the state of the Do not synchronize facet settings with Maven in the General tab of the OSGi facet doesn't make any difference.
However I keep it checked since I don't use Maven.