Product Version: NetBeans IDE 8.0.1 (Build 201408251540)
Updates: NetBeans IDE is updated to version NetBeans 8.0.1 Patch 1.1
Java: 1.8.0_25; Java HotSpot(TM) 64-Bit Server VM 25.25-b02
Runtime: Java(TM) SE Runtime Environment 1.8.0_25-b18
System: Windows 7 version 6.1 running on amd64; Cp1252; en_CA (nb)
User directory: C:\Users\Gili\AppData\Roaming\NetBeans\8.0.1
Cache directory: C:\Users\Gili\AppData\Local\NetBeans\Cache\8.0.1

Given:
DefaultRequestScope()
{
	this.queryDslConfiguration = LazyReference.create(() ->
	{
		SQLTemplates dialect = new PostgresTemplates();
		Configuration result = new Configuration(dialect);
		if (parent.getRunMode() == RunMode.DEBUG)
		{
			DebugLockMonitor debugLockMonitor = (DebugLockMonitor) getLockMonitor();
			result.addListener(debugLockMonitor);
		}
		return result;
	});
}

where getLockMonitor() is a non-final method in a non-final class.

I believe the hint is wrong because the lambda function is not invoked by the constructor. The lambda is passed into a method that constructs an anonymous class that invokes the lambda. See https://bitbucket.org/cowwoc/pouch/src/26a1127f6a4bbafe08706d5abff7dd5ebb916301/src/main/java/org/bitbucket/cowwoc/pouch/LazyReference.java?at=default#cl-32 for the implementation in question.

Expected behavior: the editor should not display this warning for lamda functions, unless it can prove that they are invoked by the constructor.