Unity UI Hot to avoid this bug? Event Trigger OnPointerEnter

Code (CSharp):

1.  
2.     EventTrigger eventTrigger;
3.     public RectTransform[] ComponentPanel;
4.     public RectTransform RectCover;
5.     public int currentPanel = 1;
6.     void Start () {
7.      
8.         eventTrigger = GetComponent<EventTrigger>();
9.         EventTrigger.Entry entry = new EventTrigger.Entry();
10.         entry.eventID = EventTriggerType.PointerEnter;
11.         entry.callback.AddListener((data) => { OnPointerEnterDelegate((PointerEventData)data); });
12.         eventTrigger.triggers.Add(entry);
13.     }
14.     void LateUpdate ()
15.     {
16.         PanelController();
17.     }
18.     public void OnPointerEnterDelegate(PointerEventData data)
19.     {
20.         for (int i = 0; i < ComponentPanel.Length; i++)
21.         {
22.             if (
23.                 data.pointerEnter.gameObject == ComponentPanel[i].transform.GetChild(0).gameObject
24.                 )
25.             {
26.                 currentPanel = i;
27.             }
28.         }
29.     }

Sometimes when rapidly move mouse OnPointerEnter not detect current panel. How to fix this? Or there is batter solution to detect on over which panel is mouse ?

 

I am not sure if it is really a problem of PointerEnter. Maybe it has to do with your animation.
To find out if it is a problem with the event or not you should add

Debug.LogFormat("current panel changed to {0}.", i);

after

currentPanel = i;

. Then check in the console if it really doesn't trigger the event.