https://bugzilla.xfce.org/show_bug.cgi?id=11557
Fixed in Thunar which provides the Properties dialog window.
** Bug watch added: Xfce Bugzilla #11557
https://bugzilla.xfce.org/show_bug.cgi?id=11557
** Package changed: ristretto (Ubuntu) => thunar (Ubuntu)
** Changed in: thunar (Ubuntu)
Thank you for taking the time to report this bug and helping to make
Ubuntu better. The issue you are reporting is an upstream one and it
would be nice if somebody having it could send the bug to the developers
of the software by following the instructions at
https://wiki.ubuntu.com/Bugs/Upstream/X