2 files changed, 15 insertions, 3 deletions
diff --git a/desktop-themes/BlackMATE/gtk-3.0/gtk-widgets.css b/desktop-themes/BlackMATE/gtk-3.0/gtk-widgets.css
index 9dd3bd4b..e3f53227 100644
--- a/desktop-themes/BlackMATE/gtk-3.0/gtk-widgets.css
+++ b/desktop-themes/BlackMATE/gtk-3.0/gtk-widgets.css
@@ -2592,7 +2592,12 @@ GtkPopover .separator {
 	color: #747473;
 }
 
-.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: 7px 7px 0px 0px;
     border-width: 0px;
     box-shadow: 0 0 0 2px @wm_csd_border_color, 0 2px 8px 3px @wm_shadow;
@@ -2605,8 +2610,10 @@ GtkPopover .separator {
     background-color: @theme_bg_color;
 }
 
+/* workaround to avoid unwanted black frames if switching compositor on/off */
 .window-frame:backdrop {
-    box-shadow: 0 0 0 2px shade(@wm_border,1.1), 0 2px 5px 1px @wm_shadow;
+/*    box-shadow: 0 0 0 2px shade(@wm_border,1.1), 0 2px 5px 1px @wm_shadow;*/
+    box-shadow: none;
 }
 
 .window-frame.ssd {
@@ -2624,7 +2631,7 @@ GtkPopover .separator {
 
 .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/BlackMATE/gtk-3.0/mate-applications.css b/desktop-themes/BlackMATE/gtk-3.0/mate-applications.css
index 75d71215..fdfa78a7 100644
--- a/desktop-themes/BlackMATE/gtk-3.0/mate-applications.css
+++ b/desktop-themes/BlackMATE/gtk-3.0/mate-applications.css
@@ -301,6 +301,11 @@ CajaQueryEditor .toolbar .entry:focus {
     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;
+}
+
 /* first make all transparent */
 WnckSelector.menubar,
 PanelMenuBar.menubar,