iPad 2 bezel becoming detached?

i've had ipad 2 since september , noticed today piece of plastic (?) between glass , aluminum chassis isn't adhered together. if press finger on area there little bit of movement , there audible 'click' when remove finger. area question half of inch long.

warrant device swap apple? doesn't bother me, i'm worried if device sealed dust/moisture might find way ipad.

 

i exchange

 

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