Merge pull request #4912 from matrix-org/bwindels/bettersticky

Add wrapper to room list so sticky headers don't need a background

res/css/structures/_LeftPanel2.scss

@@ -121,6 +121,21 @@ $tagPanelWidth: 70px; // only applies in this file, used for calculations
             }
         }
 
+        .mx_LeftPanel2_roomListWrapper {
+            display: flex;
+            flex-grow: 1;
+            overflow: hidden;
+            min-height: 0;
+
+            &.stickyBottom {
+                padding-bottom: 32px;
+            }
+
+            &.stickyTop {
+                padding-top: 32px;
+            }
+        }
+
         .mx_LeftPanel2_actualRoomListContainer {
             flex-grow: 1; // fill the available space
             overflow-y: auto;

res/css/views/rooms/_RoomSublist2.scss

@@ -54,9 +54,6 @@ limitations under the License.
             max-width: 100%;
             z-index: 2; // Prioritize headers in the visible list over sticky ones
 
-            // Set the same background color as the room list for sticky headers
-            background-color: $roomlist2-bg-color;
-
             // Create a flexbox to make ordering easy
             display: flex;
             align-items: center;