Solidworks is putting a strange "X" close box randomly on my desktop

this just started happening recently, at least i just recently realized it was happening.

im getting this tiny little "x" button in the middle of my desktop. i have 2 monitors, left monitor is my primary display, solidworks is open on my secondary display (right monitor). "x" button thingy is showing up on my primary (left) monitor.

i know its tied to solidworks because when i click it, it tries to close my currently open document.

anyone else seen this?

SolidworksUser Interface