Open Radar

 
Summary:
When copying an SKNode, the NSMutableDictionary userData property doesn't seem to be copied. I would expect this to happen. If this is by design, you should really put a warning in the documentation (I couldn't find anything).

Steps to Reproduce:
In a Sprite Kit project run this code:
	// Assuming Spaceship.png is part of the project.
	SKSpriteNode *original = [SKSpriteNode spriteNodeWithImageNamed:@"Spaceship"];
	original.userData = [@{@"key1" : @"value1"} mutableCopy];
	NSLog(@"Original userData: %@", original.userData);
	SKSpriteNode *copied = [original copy];
	NSLog(@"Copied userData: %@", copied.userData);

Expected Results:
The copied node is an exact copy of the original, including the userData dictionary.

Actual Results:
The userData dictionary seems to be nil. Output of the above code:
2013-06-27 20:35:50.977 CopyTest[88781:303] Original userData: {
    key1 = value1;
}
2013-06-27 20:35:50.977 CopyTest[88781:303] Copied userData: (null)