Simple drag and drop programme. Bug

Question

Hi.
I have a simple drag and drop app for learning English. You hear for eg: banana and have to drag that object to a certain area.
When my little kid plays it she finds bugs - she's my researcher.
It's hard to explain the bug as its hard to get it but kids can easily. You click on the target object and drag it a little, then quickly reclick it but not drag ie: release the mouse as it goes back to its initial position. You move the mouse away and and the object follows mouse even though you are now not dragging and you can't drop it.
I know its hard to imagine this but perhaps this is a know bug for drag and drops.
private function dragHandler(e:MouseEvent)
            e.currentTarget.startDrag();
            xIni = e.currentTarget.x;
            yIni = e.currentTarget.y;
The you have the following which has an event listener for the mouse up event.
private function checkDrag(e:MouseEvent)
            e.currentTarget.stopDrag();
            if (this.currentBubble.hitTestObject(this.dragTarget))
                if (currentBubble && currentBubble == e.currentTarget)
                    currentBubble.visible = false;
                    blnCorrect = true;
                    points = this.points + 10;
                    score.score_txt.text = String(points);
                    correct++;
                    vehiclePosition+=100;
                    TweenLite.to(animation,1,{x:vehiclePosition})
                    trace("CORRECT="+correct);
                    if (correct == 10)
                        endGame();
                        return;
                bubbles.splice(currentIndexArray,1);//you must specify the parameter 1 ie: remove 1
                sndChannel=soundCorrect.play();
                sndChannel.addEventListener(Event.SOUND_COMPLETE, soundCorrectComplete)
            else
                incorrect++;
                sndChannel=soundIncorrect.play();
                sndChannel.addEventListener(Event.SOUND_COMPLETE, soundIncorrectComplete);
                TweenLite.to(e.currentTarget, 1, {x:xIni, y:yIni, ease:Strong.easeOut, onComplete:onFinishTween});

Answer 1

So, the code should be like this:
private function dragHandler(e:MouseEvent):void
     e.currentTarget.startDrag();
     stage.addEventListener(MouseEvent.MOUSE_UP, checkDrag);
     xIni = e.currentTarget.x;
     yIni = e.currentTarget.y;
private function checkDrag(e:MouseEvent):void
     stopDrag();
     stage.removeEventListener(MouseEvent.MOUSE_UP, checkDrag);
Also, i suggest you get into habit to ALWAYS declare datatypes, including what functions return - it is good for memory and performance. In your case, :void should be function return datatype.
In addition, you don't need to stopDrag() on an object - since only a single object can be dragged at a time - just calling stopDrag() is sufficient.