I have a project which worked well with IDEA 9, with Maven in the command line but fails to compile with IDEA 10. The code is green in the editor but the compiler complains about missing classes. The missing classes are Maven dependencies with runtime scope, i.e. IDEA seems to ignore runtime dependencies in the test compile classpath. Since this works with IDEA 9 and Maven command line and the code is green in the editor I would consider this a bug, right?