Created attachment 6824 Fix client pointer with Gtk+ < 3.20 With the latest release 0.3.1, and Gtk+ < 3.20 notifications are not displayed, patch fixes this isssue
Wow, nasty oversight. Thanks for catching that one, pushed to master: https://git.xfce.org/apps/xfce4-notifyd/commit/?id=c5ec8e7d04c458b382df6b02271763c56471fc54 (Really sucks having to test against multiple Gtk+3 releases...)