Cursor Issue

Hi,

I have a 3d scene setup and able to navigate with touchpad.
I have few gameobjects clicking on which iam displaying popup text which are UIelements with a panel having text and image.

Using the Crosshair3d.cs from the sdk samples in order to display the cursor.

What happens is sometime when i go close to the text UI elements, the cursor suddenly disappear and after moving away getting back the cursor.
Sometimes the cursor disappears and does not appear again.
Can anyone please help me out.