After upgrade from 0.8.1 to 0.8.2 content of preferences box is empty (Gtk.Notebook widget is missing), only dialog buttons. Gtk+ 3.18, libxfce4ui 4.13.1
I found a workaround, remove 'show_editor' property (only available since Gtk+ 3.20) for GtkColorButton, and everything is fine.
Hi Olivier, thanks for the report and the issue resolution! I've prepared a patch that modifies 'show_editor' property only for GTK >= 3.20: https://git.xfce.org/apps/xfce4-terminal/commit/?id=adeb89e0c1e7312d3874c9ee53fbc050a570e013