Hey Jamie, sorry but it seems that issue didn't get fixed, see bug #1799688
The denied error states
name="/tmp/gnome-desktop-thumbnailer.png"
or your rule is
"owner /tmp/{,.}gnome_desktop_thumbnail.* w,"
there is at least a mismatch _ vs - in the filename
but also "thumnail.*" seems to not work, if I replace ".*" by "er.png" (e.g the exact filename) then nautilus starts showing the pdf previews (I tested by copying a pdf as a new bug.pdf name)
Hey Jamie, sorry but it seems that issue didn't get fixed, see bug #1799688
The denied error states tmp/gnome- desktop- thumbnailer. png"
name="/
or your rule is .}gnome_ desktop_ thumbnail. * w,"
"owner /tmp/{,
there is at least a mismatch _ vs - in the filename
but also "thumnail.*" seems to not work, if I replace ".*" by "er.png" (e.g the exact filename) then nautilus starts showing the pdf previews (I tested by copying a pdf as a new bug.pdf name)