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.
When one goes to profile a project, a window opens asking how you want to profile the project. If you close the window via the cancel button or the window close button, it looks like it still runs. It looks like this is a regression of bug 210851
Already fixed in devbuilds, the redesigned profiler isn't affected by this problem.