2 files changed, 15 insertions, 3 deletions
diff --git a/desktop-themes/Menta/gtk-3.0/gtk-widgets.css b/desktop-themes/Menta/gtk-3.0/gtk-widgets.css
index c270bdb6..02977cb6 100644
--- a/desktop-themes/Menta/gtk-3.0/gtk-widgets.css
+++ b/desktop-themes/Menta/gtk-3.0/gtk-widgets.css
@@ -4743,7 +4743,12 @@ GtkModelButton.button.flat:selected {
     icon-shadow: none;
 }
 
-.window-frame {
+/* workaround to avoid unwanted black frames if switching compositor on/off */
+.background .window-frame  {
+    box-shadow: none;
+}
+
+.background.csd .window-frame {
     border-radius: 6px 6px 0px 0px;
     border-width: 0px;
     box-shadow: 0 0 0 1px @wm_border, 0 2px 8px 3px @wm_shadow;
@@ -4751,8 +4756,10 @@ GtkModelButton.button.flat:selected {
     margin: 10px;
 }
 
+/* workaround to avoid unwanted black frames if switching compositor on/off */
 .window-frame:backdrop {
-    box-shadow: 0 0 0 1px shade(@wm_border,1.1), 0 2px 5px 1px @wm_shadow;
+/*    box-shadow: 0 0 0 1px shade(@wm_border,1.1), 0 2px 5px 1px @wm_shadow;*/
+    box-shadow: none;
 }
 
 .window-frame.tiled {
@@ -4774,7 +4781,7 @@ GtkModelButton.button.flat:selected {
 
 .window-frame.csd.popup {
     border-radius: 0;
-    box-shadow: 0 1px 5px @wm_shadow;
+    box-shadow: none;
 }
 
 .window-frame.csd.tooltip {
diff --git a/desktop-themes/Menta/gtk-3.0/mate-applications.css b/desktop-themes/Menta/gtk-3.0/mate-applications.css
index cef0c576..d4dc3042 100644
--- a/desktop-themes/Menta/gtk-3.0/mate-applications.css
+++ b/desktop-themes/Menta/gtk-3.0/mate-applications.css
@@ -360,6 +360,11 @@ MatePanelApplet GtkToggleButton.button {
     background-image: none;
 }
 
+/* workaround to avoid unwanted black frames if switching compositor on/off */
+.mate-panel-menu-bar .window-frame.csd.popup {
+    box-shadow: none;
+}
+
 /* dictionary applet */
 GdictApplet .entry {
     /* normal panel */