Here is my feedback with a gnome-shell session. I'm using gnome3-staging ppa since a couple months now, and have not met issue.
The journalctl indeed log some warnings, but have no sad viewable effect:
org.gnome.Shell.desktop[1910]: (gnome-shell:1910): Gtk-WARNING **: Theme parsing error: gtk-widgets-borders.css:31:18: The :insensitive pseudo-class is deprecated. Use :disabled instead.
org.gnome.Shell.desktop[1910]: (gnome-shell:1910): Gtk-WARNING **: Theme parsing error: gtk-widgets-borders.css:226:33: The :focused pseudo-class is deprecated. Use :focus instead.
org.gnome.Shell.desktop[1910]: (gnome-shell:1910): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:16:33: The style property GtkMenu:horizontal-padding is deprecated and shouldn't be used anymore. It will be removed in a future version
..... The style property GtkMenu:vertical-padding is deprecated and shouldn't be used anymore. It will be removed in a future version
.... The style property GtkMenuItem:arrow-scaling is deprecated and shouldn't be used anymore. It will be removed in a future version
...The style property GtkNotebook:tab-overlap is deprecated and shouldn't be used anymore. It will be removed in a future version
... The style property GtkWidget:separator-width is deprecated and shouldn't be used anymore. It will be removed in a future version
....The style property GtkWidget:separator-height is deprecated and shouldn't be used anymore. It will be removed in a future version
...The style property GtkWidget:wide-separators is deprecated and shouldn't be used anymore. It will be removed in a future version
....The style property GtkWidget:link-color is deprecated and shouldn't be used anymore. It will be removed in a future version
...The style property GtkWidget:visited-link-color is deprecated and shouldn't be used anymore. It will be removed in a future version
.... unity.css:109:15: The 'icon-shadow' property has been renamed to '-gtk-icon-shadow'
.... gedit.css:65:67: The :prelight pseudo-class is deprecated. Use :hover instead.
......
Here is my feedback with a gnome-shell session. I'm using gnome3-staging ppa since a couple months now, and have not met issue.
The journalctl indeed log some warnings, but have no sad viewable effect:
org.gnome. Shell.desktop[ 1910]: (gnome-shell:1910): Gtk-WARNING **: Theme parsing error: gtk-widgets- borders. css:31: 18: The :insensitive pseudo-class is deprecated. Use :disabled instead.
org.gnome. Shell.desktop[ 1910]: (gnome-shell:1910): Gtk-WARNING **: Theme parsing error: gtk-widgets- borders. css:226: 33: The :focused pseudo-class is deprecated. Use :focus instead.
org.gnome. Shell.desktop[ 1910]: (gnome-shell:1910): Gtk-WARNING **: Theme parsing error: gtk-widgets. css:16: 33: The style property GtkMenu: horizontal- padding is deprecated and shouldn't be used anymore. It will be removed in a future version
..... The style property GtkMenu: vertical- padding is deprecated and shouldn't be used anymore. It will be removed in a future version arrow-scaling is deprecated and shouldn't be used anymore. It will be removed in a future version tab-overlap is deprecated and shouldn't be used anymore. It will be removed in a future version separator- width is deprecated and shouldn't be used anymore. It will be removed in a future version separator- height is deprecated and shouldn't be used anymore. It will be removed in a future version wide-separators is deprecated and shouldn't be used anymore. It will be removed in a future version link-color is deprecated and shouldn't be used anymore. It will be removed in a future version visited- link-color is deprecated and shouldn't be used anymore. It will be removed in a future version
.... The style property GtkMenuItem:
...The style property GtkNotebook:
... The style property GtkWidget:
....The style property GtkWidget:
...The style property GtkWidget:
....The style property GtkWidget:
...The style property GtkWidget:
.... unity.css:109:15: The 'icon-shadow' property has been renamed to '-gtk-icon-shadow'
.... gedit.css:65:67: The :prelight pseudo-class is deprecated. Use :hover instead.
......
That is: lot of warning spams but nothing else.