bug#16395: Tab-containing lines displayed with different background?

[Jarosław Rzeszótko]

Hi,

- Open up current bzr emacs --no-init, without any .Xresources, using gtk+3

- Customize default face to background #151515

- Open a new text file

- Insert a few empty lines

- Insert a few lines starting with a few tabs and some text

- The lines without text get a #141414 background, only the lines with
text get #151515, on a good display there are noticeable "stripes"

Pretty strange...

Cheers,
Jarosław Rzeszótko