diff --git a/res/css/views/right_panel/_ThreadPanel.scss b/res/css/views/right_panel/_ThreadPanel.scss
index 1cfbdd420a..cfcaa8c789 100644
--- a/res/css/views/right_panel/_ThreadPanel.scss
+++ b/res/css/views/right_panel/_ThreadPanel.scss
@@ -176,22 +176,6 @@ limitations under the License.
         // Account for scrollbar when hovering
         padding-top: 0;
 
-        .mx_ThreadSummary {
-            position: relative;
-            padding-right: 11px;
-
-            &::after {
-                content: '';
-                display: block;
-                position: absolute;
-                left: 0;
-                bottom: -16px;
-                height: 1px;
-                width: 100%;
-                border-bottom: 1px solid $message-action-bar-border-color;
-            }
-        }
-
         .mx_DateSeparator {
             display: none;
         }
diff --git a/res/css/views/right_panel/_TimelineCard.scss b/res/css/views/right_panel/_TimelineCard.scss
index f87e58a856..7b17f904a2 100644
--- a/res/css/views/right_panel/_TimelineCard.scss
+++ b/res/css/views/right_panel/_TimelineCard.scss
@@ -105,6 +105,25 @@ limitations under the License.
         }
     }
 
+    .mx_EventTile,
+    .mx_GenericEventListSummary {
+        .mx_ThreadSummary {
+            position: relative;
+            padding-right: 11px;
+
+            &::after {
+                content: '';
+                display: block;
+                position: absolute;
+                left: 0;
+                bottom: -16px;
+                height: 1px;
+                width: 100%;
+                border-bottom: 1px solid $message-action-bar-border-color;
+            }
+        }
+    }
+
     .mx_CallEvent_wrapper {
         justify-content: center;
         margin: auto 5px;