Fix jumping to bottom without a highlighted event

Signed-off-by: Robin Townsend <robin@robin.town>

src/components/structures/RoomView.tsx

@@ -1526,10 +1526,19 @@ export default class RoomView extends React.Component<IProps, IState> {
 
     // jump down to the bottom of this room, where new events are arriving
     private jumpToLiveTimeline = () => {
+        if (this.state.initialEventId && this.state.isInitialEventHighlighted) {
+            // If we were viewing a highlighted event, firing view_room without
+            // an event will take care of both clearing the URL fragment and
+            // jumping to the bottom
             dis.dispatch({
                 action: 'view_room',
                 room_id: this.state.room.roomId,
             });
+        } else {
+            // Otherwise we have to jump manually
+            this.messagePanel.jumpToLiveTimeline();
+            dis.fire(Action.FocusComposer);
+        }
     };
 
     // jump up to wherever our read marker is