diff --git a/gtk-3.0/_common.scss b/gtk-3.0/_common.scss
index 37e9a9a..e0e9303 100755
--- a/gtk-3.0/_common.scss
+++ b/gtk-3.0/_common.scss
@@ -9,7 +9,6 @@
 $ease-out-quad: cubic-bezier(0.25, 0.46, 0.45, 0.94);
 $asset_suffix: if($variant=='dark', '-dark', '');
 $backdrop_transition: 200ms ease-out;
-$sidebar_backdrop_transition: 200ms $ease-out-quad;
 $button_transition: all 200ms $ease-out-quad;
 
 * {
diff --git a/gtk-3.0/gtk-dark.css b/gtk-3.0/gtk-dark.css
index 122cf53..bc81657 100755
--- a/gtk-3.0/gtk-dark.css
+++ b/gtk-3.0/gtk-dark.css
@@ -4014,8 +4014,7 @@ treeview ~ scrollbar.vertical {
     border-right-style: none; }
   .sidebar:backdrop {
     background-color: #181b28;
-    border-color: rgba(91, 93, 102, 0.19);
-    transition: 200ms cubic-bezier(0.25, 0.46, 0.45, 0.94); }
+    border-color: rgba(91, 93, 102, 0.19); }
   .sidebar row {
     padding: 8px 12px;
     transition: all .12s ease-in; }
diff --git a/gtk-3.0/gtk.css b/gtk-3.0/gtk.css
index 9e51761..3b86cea 100755
--- a/gtk-3.0/gtk.css
+++ b/gtk-3.0/gtk.css
@@ -4021,8 +4021,7 @@ treeview ~ scrollbar.vertical {
     border-right-style: none; }
   .sidebar:backdrop {
     background-color: #e7eaed;
-    border-color: rgba(142, 142, 142, 0.217);
-    transition: 200ms cubic-bezier(0.25, 0.46, 0.45, 0.94); }
+    border-color: rgba(142, 142, 142, 0.217); }
   .sidebar row {
     padding: 8px 12px;
     transition: all .12s ease-in; }
diff --git a/gtk-3.0/widgets/_sidebar.scss b/gtk-3.0/widgets/_sidebar.scss
index 8545c2c..2e2719f 100644
--- a/gtk-3.0/widgets/_sidebar.scss
+++ b/gtk-3.0/widgets/_sidebar.scss
@@ -28,7 +28,6 @@
   &:backdrop {
     background-color: $backdrop_sidebar_bg_color;
     border-color: $backdrop_borders_color;
-    transition: $sidebar_backdrop_transition;
   }
 
   row{