diff --git a/res/css/structures/_LeftPanel.scss b/res/css/structures/_LeftPanel.scss
index 75d37e250b..ca4a5ea6f3 100644
--- a/res/css/structures/_LeftPanel.scss
+++ b/res/css/structures/_LeftPanel.scss
@@ -22,19 +22,15 @@ limitations under the License.
     flex: 0 0 auto;
 }
 
-.mx_LeftPanel_container.mx_LeftPanel_container_hasTagPanel {
-    /* TagPanel 70px + LeftPanel 260px */
-    flex: 0 0 auto;
-}
-
-.mx_LeftPanel_container_collapsed {
+.mx_LeftPanel_container.collapsed {
+    min-width: unset;
     /* Collapsed LeftPanel 70px */
     flex: 0 0 70px;
 }
 
-.mx_LeftPanel_container_collapsed.mx_LeftPanel_container_hasTagPanel {
+.mx_LeftPanel_container.collapsed.mx_LeftPanel_container_hasTagPanel {
     /* TagPanel 70px + Collapsed LeftPanel 70px */
-    flex: 0 0 auto;
+    flex: 0 0 140px;
 }
 
 .mx_LeftPanel_hideButton {
@@ -53,7 +49,7 @@ limitations under the License.
     background-color: $secondary-accent-color;
     flex: 1;
     position: relative;
-
+    overflow-x: hidden;
     display: flex;
     flex-direction: column;
 }
@@ -71,7 +67,7 @@ limitations under the License.
     z-index: 6;
 }
 
-.mx_LeftPanel.collapsed .mx_BottomLeftMenu {
+.mx_LeftPanel_container.collapsed .mx_BottomLeftMenu {
    flex: 0 0 160px;
    margin-bottom: 9px;
 }
@@ -94,7 +90,7 @@ limitations under the License.
     pointer-events: none;
 }
 
-.collapsed .mx_RoleButton {
+.mx_LeftPanel_container.collapsed .mx_RoleButton {
     margin-right: 0px ! important;
     padding-top: 3px ! important;
     padding-bottom: 3px ! important;
@@ -118,7 +114,7 @@ limitations under the License.
     margin-right: 0px;
 }
 
-.mx_LeftPanel.collapsed .mx_BottomLeftMenu_settings {
+.mx_LeftPanel_container.collapsed .mx_BottomLeftMenu_settings {
     float: none;
 }
 
@@ -127,7 +123,7 @@ limitations under the License.
         flex: 0 0 50px;
     }
 
-    .mx_LeftPanel.collapsed .mx_BottomLeftMenu {
+    .mx_LeftPanel_container.collapsed .mx_BottomLeftMenu {
         flex: 0 0 160px;
     }