This Bugzilla instance is a read-only archive of historic NetBeans bug reports. To report a bug in NetBeans please follow the project's instructions for reporting issues.
I like the subword completion, particularly when I'm not sure exactly the name. But usually it too much stuff and gets in the way. So I turned it back off. It would be more useful (IMHO) if it only incorporated the subwords on the 2nd <ctrl-space>