Try writing &zoom reset under the background. When beginning a new scene, always reset zoom or zoom where you desire it to be, because if you zoomed in previously on a scene, that zoom will carry over until reset/changed.
#Random example:
INT. BACKGROUND
&zoom reset
&speechbubble reset
&cut to zone 2
&CHAR spot 1.280 160 0 in zone 3 at layer 4
@CHAR walks to 1.280 160 0 in zone 2 in 3 AND CHAR does it while walk_neutral