guix search: first line not shown

[Ekaitz Zarraga]

Hi,

With the recent adoption of $PAGER in `guix search` I'm experiencing an issue. 
The some of the firsts lines are not shown if the output long enough to cover 
the full screen so I can't see the first package name. It forces me to scroll 
down and up again.

If I run `guix search | less` works as expected.

Other paged commands like git work as expected too.

Is this happening to others too?

Best,
Ekaitz