Comment 7 for bug 1463623

I wanted to be sure that I did not manually edit the file (or used an external program that would be to blame), I've searched for a way to reproduce this with only Inkscape and a file that originally works.

Download http://upload.wikimedia.org/wikipedia/commons/2/20/Text-x-generic.svg, open it in Inkscape, save an optimized version (same options I listed before). The optimized version does not have the width and height parameters.

Editing the file and saving as a normal svg does not restore the parameters (I did not expect it to).