There seems to be a transparent white bar on my note 9. Ideas??

There seems to be a transparent or translucent white bar on the lower right hand corner of my note 9 when I reset my phone it goes away and then appears a short time later it is completely non-responsive it just gives the Ole click and vibrate shake like a dead unresponsive or maybe not unresponsive but what would be considered a maybe a dead pull. Does anyone have any idea what it could possibly be

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