When the camera is horizontal (keypad 1 or 3), axis and grid lines appear. When the camera rotates around the z axis (keypad 4 or 6), all grid lines disappear. In blender 2.79 and previous versions, the 0xy grid would still be visible. In the overlay dropdown menu, the grid checkbox is greyed out and selecting/deselecting does not fix the issue.
Exact steps for others to reproduce the error
- Enter blender 3D view (main default)
- Press keypad 1
- Press keypad 4