This is interesting then, because I do it from BundleContext, and it works in v2

If it is just some random thing, that gets it working for me in v2, then maybe I stop using Import-Library or load them through JMX. It shouldn't be a problem. On the other hand I think that the same rules should apply to loading from BundleContext. It's not nice if I have to distinguish between different methods of loading, what I can use in Manifest and what I cannot.