All images rendered in Cantor by R have a vertical white line to the right.

Reproducible: Always

Steps to Reproduce:
  1. Tell Cantor to open a new R session.
  2. Tell Cantor to evaluate: 
x <- seq(-pi, pi, len=50)
y <- x
f <- outer(x, y, function(x, y) cos(y)/(1 + x^2))
image(x, y, f)

Actual Results:  
  2. an image with a vertical white line

Expected Results:  
  3. a clean image