Bug#836238: no command line prompt visible after updating GTK+3 to 3.21.5-1

[Viktor Jägersküpper]

Hello Adrian,

if I start mate-terminal from the command line (with gnome-terminal)
while using the "TraditionalOk" theme, I get

$ mate-terminal
(mate-terminal:4005): Gtk-WARNING **: Theme parsing error:
gtk-widgets.css:2202:16: not a number
(mate-terminal:4005): Gtk-WARNING **: Theme parsing error:
gtk-widgets.css:2202:16: Expected a string.
(mate-terminal:4005): Gtk-WARNING **: Theme parsing error:
gtk-widgets.css:3157:14: not a number
(mate-terminal:4005): Gtk-WARNING **: Theme parsing error:
gtk-widgets.css:3157:14: Expected a string.
(mate-terminal:4005): Gtk-WARNING **: Theme parsing error:
gtk-widgets.css:3658:14: not a number
(mate-terminal:4005): Gtk-WARNING **: Theme parsing error:
gtk-widgets.css:3658:14: Expected a string.
(mate-terminal:4005): Gtk-WARNING **: Theme parsing error:
gtk-widgets.css:3959:62: Using one color stop with linear-gradient() is
deprecated.
(mate-terminal:4005): Gtk-WARNING **: Theme parsing error:
gtk-widgets.css:3992:61: Using one color stop with linear-gradient() is
deprecated.
(mate-terminal:4005): Gtk-WARNING **: Theme parsing error:
gtk-widgets.css:4008:61: Using one color stop with linear-gradient() is
deprecated.
(mate-terminal:4005): Gtk-WARNING **: Theme parsing error:
gtk-widgets.css:4024:59: Using one color stop with linear-gradient() is
deprecated.
(mate-terminal:4005): Gtk-WARNING **: Theme parsing error:
gtk-widgets.css:4038:62: Using one color stop with linear-gradient() is
deprecated.
(mate-terminal:4005): Gtk-WARNING **: Theme parsing error:
mate-applications.css:214:16: not a number
(mate-terminal:4005): Gtk-WARNING **: Theme parsing error:
mate-applications.css:214:16: Expected a string.

With GTK+ 3.20.9-1 these messages do not appear. With GTK+ 3.21.5-3 (I
updated to the latest version) I get different messages depending on
which theme I use. Maybe this helps.

Viktor