disable that the face of a newline character extends to the right

[Florian Kaufmann]

Hello

The face of a newline character seems to extend to the right to
infinity.

I have set the background color of font-lock-comment-face, but I find
it ugly if now all comment lines have a colored beam at the right
side.

Is there a way to configure how the background color of a newline
character should be rendered? E.g. not at all, or just the newline
character itself.

Flo