Why does this image appear to be off-center from the anchor despite its position and alignment on the right panal?

I have this image anchored with the intention of it being perfectly centered to the mouse, however, despite what the position X/Y and alignment would suggest, it seems to be off-center (in the widget editor at least). It is difficult to say if it is actual off center in game, but I am wondering why does it look like this in the widget editor? Is this somehow actually centered in game? The translation has not been adjusted either as seen in the second image below.