diff --git a/res/css/structures/_TagPanel.scss b/res/css/structures/_TagPanel.scss
index 0065ffa502..f5c4c4c698 100644
--- a/res/css/structures/_TagPanel.scss
+++ b/res/css/structures/_TagPanel.scss
@@ -110,13 +110,13 @@ limitations under the License.
 
 .mx_TagPanel .mx_TagTile.mx_TagTile_selected::before {
     content: '';
-    height: 56px;
+    height: calc(100% + 16px);
     background-color: $accent-color;
     width: 5px;
     position: absolute;
     left: -15px;
     border-radius: 0 3px 3px 0;
-    top: -8px; // (56 - 40)/2
+    top: -8px; // (16px / 2)
 }
 
 .mx_TagPanel .mx_TagTile.mx_AccessibleButton:focus {