2 files changed, 15 insertions, 3 deletions
diff --git a/desktop-themes/TraditionalOk/gtk-3.0/gtk-widgets.css b/desktop-themes/TraditionalOk/gtk-3.0/gtk-widgets.css
index 038d96aa..2ca085a7 100644
--- a/desktop-themes/TraditionalOk/gtk-3.0/gtk-widgets.css
+++ b/desktop-themes/TraditionalOk/gtk-3.0/gtk-widgets.css
@@ -2539,7 +2539,12 @@ GtkInfoBar:last-child,
 	border-image: 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-width: 0px;
 	border-radius: 7px 7px 0 0;
 	border-style: solid;
@@ -2547,8 +2552,10 @@ GtkInfoBar:last-child,
 	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
+/*	box-shadow: 0 0 0 1px shade(@wm_border,1.1), 0 2px 5px 1px*/
+    box-shadow: none;
 }
 
 .window-frame.tiled {
@@ -2570,7 +2577,7 @@ GtkInfoBar:last-child,
 
 .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/TraditionalOk/gtk-3.0/mate-applications.css b/desktop-themes/TraditionalOk/gtk-3.0/mate-applications.css
index 410e6704..075a0ca4 100644
--- a/desktop-themes/TraditionalOk/gtk-3.0/mate-applications.css
+++ b/desktop-themes/TraditionalOk/gtk-3.0/mate-applications.css
@@ -94,6 +94,11 @@ MatePanelApplet {
 	text-shadow: none;
 }
 
+/* workaround to avoid unwanted black frames if switching compositor on/off */
+.mate-panel-menu-bar .window-frame.csd.popup {
+    box-shadow: none;
+}
+
 /* set selected menubar button */
 PanelMenuBar.menubar .menuitem:hover {
 	background-image: none;