I recently uploaded some tiff files from the National Library of Sweden. They are all quite big but display properly as one-page TIFFs in both Gimp an ImageMagick (display) on my Ubuntu machine.
Upon uploading them to Commons they are however interpreted as two-page files and the generated thumbnails are entirely (or almost entirely) white. I've had the two-page issue before with tiffs from another source but the white thumbnails are new.
The files can be found at Category:Maps digitised by the National Library of Sweden