I noticed recently, maybe a few days ago that this white mark appeared above my Tickets in the Navigation bar, it’s a bit of an eye sore. Also the bottom of the Robux sprite is cut off.
It only appears when I am zoomed in at 110%, (my default) due to a 32inch TV with 1280 x 720 res. I thought it quite weird that at all other zoom %'s it’s fine. I also use Google Chrome.
Edit: Just realised that the mark above tickets is probably the piece missing from the Robux icon, haha.