Object Dimensions

Just wondering if there was a reason why an objects dimensions are shown in the viewport sidebar, but not also displayed in the Object Transform Properties?

Not sure, it sure would be convenient to have it in both places

Perhaps it’s because the dimensions are changed by a number of things like the mesh geometry and any modifiers?

Hmmm… okay.
To me though it’s still an object parameter, and it’s one who’s values you can modify directly. It’s my feeling that it shouldn’t just be hidden in the side panel. If it’s an object parameter, then it should also belong in the object parameter window.
That’s just me though.