vaadin bundle doesn't export package VAADIN/widgetsets, this is a bug?

Vaadin bundle don’t export package VAADIN/widgetsets, the Export-Package field doesn’t contain this package. So, the exception appear when other bundle try access to resources in this package. This is log message:

not found from filesystem or through class loader. Add widgetset and/or theme JAR to your classpath or add files to WebContent/VAADIN folder.|#]

Also there are appear dialog with similar message and ui don’t load.

Is it a bug?

I have the same problem. Vaadin-7.0.0.rc2.

Umm… It’s 2012-2-17? It seems no response to this question after a year…

Do you use Maven? You may have to include the dependency vaadin-client-compiled in your pom.