Why the very different release formats for Hitchhiker's Guide to the Galaxy?

Alright. The first time I saw the Hitchhiker's Guide to the Galaxy (2005), it was... believe it or not... 4:3. I even obtained a copy of this. Later, I discovered that it was supposedly released in 2.35:1. Why supposedly? Read on.

I've searched for and viewed different widescreen releases of the film, and they all appear to be the same. This might seem obvious, but I have something to show you.

I made that from two different versions I obtained. In every one of the widescreen releases, at that point in the movie (17:38... although it is throughout the movie really) you can see where Arthur's feet are cut off at the bottom of the frame. Yet, in the 4:3 release, you can clearly see the rest of his feet, as well as the grate on the floor that is between the camera and the actors. I overlaid the two images so you could clearly see that in the widescreen release, there is footage above and below that is cut off... while in the 4:3 release, the footage was cut off on the sides, instead of at the top and bottom.

It isn't a fluke of that one scene.

And here's another...

I just picked all these times (34:00 and 1:06:12 respectively on the last two) at random.

Does anyone know of a widescreen release that includes everything? Was there one even released? Was there a reason why the widescreen version, which naturally should have contained more screen real estate, was actually cropped?