Put avatar is right place when sender isnt displayed in message bubbles

res/css/views/rooms/_EventBubbleTile.scss

@@ -162,6 +162,12 @@ limitations under the License.
         }
     }
 
+    &.mx_EventTile_noSender {
+        .mx_EventTile_avatar {
+            top: -19px;
+        }
+    }
+
     &[data-has-reply=true] {
         > .mx_EventTile_line {
             flex-direction: column;

src/components/views/rooms/EventTile.tsx

@@ -893,6 +893,7 @@ export default class EventTile extends React.Component<IProps, IState> {
             mx_EventTile_unknown: !isBubbleMessage && this.state.verified === E2E_STATE.UNKNOWN,
             mx_EventTile_bad: isEncryptionFailure,
             mx_EventTile_emote: msgtype === 'm.emote',
+            mx_EventTile_noSender: this.props.hideSender,
         });
 
         // If the tile is in the Sending state, don't speak the message.