Toolbar item doesn't honor UITextAttributeTextShadowOffset in iOS 5

This is for a Toolbar item. The following code works fine in the iOS 6 simulator and on iOS 6 devices. The shadow offset (UITextAttributeTextShadowOffset) is ignored in iOS 5 simulator and iOS 5 devices. ``` [_doneButton setBackgroundImage:[UIImage imageNamed:@"standardButtonImage.png"] forState:UIControlStateNormal barMetrics:UIBarMetricsDefault]; NSDictionary *textDic = [NSDictionary dictionaryWithObjectsAndKeys: [UIFont fontWithName:@"Helvetica-Bold" size:15.0], UITextAttributeFont, [UIColor whiteColor], UITextAttributeTextColor, [UIColor blackColor], UITextAttributeTextShadowColor, [NSValue valueWithUIOffset:UIOffsetMake(1.0,1.0)], UITextAttributeTextShadowOffset, //won't honor the offset in ios5 // it's not the font, font size, text color, background image, or order in the dictionary. Must be an Apple bug. // also doesn't work if you specify [UIBarButtonItem appearance] nil]; [_doneButton setTitleTextAttributes:textDic forState:UIControlStateNormal]; ``` Has anyone had the same experience, or can anyone see anything wrong with this code?