Comment 2 for bug 160727

upstream closed the bug using this comment

"There is a separate freedesktop spec for thumbnailing, and it very clearly
specifies ~/.thumbnails as the shared thumbnail location:

http://people.freedesktop.org/~vuntz/thumbnail-spec-cache/directory.html

You would need to convince people to change the thumbnailing spec, which seems
unlikely."

doing the same on the ubuntu task there