Some strips of chunks generate completely dark

there is a glitch where a stripe of shadow and different tree generation (wich we can see with cut trees) appears on the map.

on the first picture you can see the bug as it is when found

on the second picture you can see my f3 menu (if that helps) and also block that i placed to update the light.

note: you can only light by placing block on the border of the strip if you place a block on the middle of the strip light won't update

 

edit: someone should verify if this happens multiple times in a world or if it only happen once and if multiple time is it alway's the same axis

 

edit: it is answered it can appear multiple times and on both x ans z axis