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Why mouseExited/mouseEntered isn't called when mouse exits from NStrackingArea by scrolling or doing animation? I create code like this: Mouse entered and exited: -(void)mouseEntered:(NSEvent *)theEvent { NSLog(@"Mouse entered"); } -(void)mouseExited:(NSEvent *)theEvent { NSLog(@"Mouse exited"); } Tracking area: -(void)updateTrackingAreas { if(trackingArea != nil) { [self removeTrackingArea:trackingArea]; [trackingArea release]; } int opts = (NSTrackingMouseEnteredAndExited | NSTrackingActiveAlways); trackingArea = [ [NSTrackingArea alloc] initWithRect:[self bounds] options:opts owner:self userInfo:nil]; [self addTrackingArea:trackingArea]; } More details: I have added NSViews as subviews in NSScrollView's view. Each NSView have his own tracking area and when I scroll my scrollView and leave tracking area "mouseExited" isn't called but without scrolling everything works fine. Problem is that when I scroll "updateTrackingAreas" is called and I think this makes problems. * Same problem with just NSView without adding it as subview so that's not a problem.

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