Create a Box in Front ortho view, Object Orientation not match World orientation

When I try to create a Box within the front orthographic viewport, the box's object orientation is not aligned with the world orientation.
As in X, Y and Z now are different.

Creating the box within Perspective viewport, the Box Object and World orientations are the same.

For practical purposes, i am trying to trace around a Background viewport image in front viewport which I will also manipulate in the other viewports to further define the shape.

I'm not sure if this is a bug or expected behaviour?

Many Thanks.

It's not a bug. You can use this command to align the object's pivot orientation to world, Geometry > Common Command n Tools > Freeze Object Orientation.