Is this a dead pixels problem? Please help.

i would take it back again, my 2013 does not do that.

 

Ask for another replacement, that's not normal.

 

Definitely take it back and show them. Mine does not do that at all.

 

Are you using Safari and Jason Farrell dead pixel test website? I would use another website and use Chrome to check again. I have the exact same things with the two corners of my macbook air, macbook pro, and rmbp.

 

Try setting your desktop wallpaper to black and see if the same thing happens.

 

Did you try setting a black desktop wallpaper?

 

as far as dead pixels go, that's pretty much the ideal place for one...but yeah - i would try and return it. if they give you a hard time tell them you're on your second one.