Enable thumbnails in the pcmanfm preferences.
Download this file: http://db.tt/Ijm0xeCK
Browse to the directory that contains it, in icon view.
Why is the thumbnail shown upside down? Is this a bug in libfm/pcmanfm or in libexif?
I think it's bug in libfm, it should be fixed before next release. Thank you very much.
We hope this issue is completely fixed in the Git repository recently.
Check it out when it's possible for you and if the bug still exists then reopen the report, please.
Thank you very much.