I cannot see my grid even though my grid is on (front view)

hi there ,
i have just started to use Unreal engine and something has went wrong where i cannot see my grid only in front and back view only (Grid is on in both views)

The grid is parallel to the top view and would only be a single line at best in the front view. I think they just chose to hide it in that view.

nope it suddenly got disappeared,
it used to come first