MediaWiki (according to the image description page and height attribute on https://commons.wikimedia.org/wiki/File:SR_Technics_hangar_at_Zurich_International_Airport.jpg ) thinks this image is 800x458. However the actual dimensions of the image are 800x457
Somewhere in the calculation there is some incorrect rounding or other off by 1 error.
Expected behaviour
- MediaWiki knows the correct dimensions of thumbnails.
See also T318486#9990608