Merge pull request #6138 from matrix-org/gsouquet/containment-event

Fix mx_Event containment rules and empty read avatar row

src/components/views/rooms/EventTile.tsx

@@ -644,7 +644,7 @@ export default class EventTile extends React.Component<IProps, IState> {
 
         // return early if there are no read receipts
         if (!this.props.readReceipts || this.props.readReceipts.length === 0) {
-            return (<span className="mx_EventTile_readAvatars" />);
+            return null;
         }
 
         const ReadReceiptMarker = sdk.getComponent('rooms.ReadReceiptMarker');