Background Image Aligment ...

Hello,

perhaps a stupid question, but I observed something strange with background
images. I had 3 images (top, front, side), and it was not possible to me to
align these pictures propely until I pasted them in the middle of a larger 4:3 image (then they did align perfectly …)

Did someone else notice difficulties in aligning background images of different
aspect ratios in the blender view, and is this intentional?

Regards
Alexander