message: Fix show-all keyboard focus regression
diff: @@ -237,10 +237,13 @@ export default class RoomSublist2 extends React.Component<IProps, IState> {
  };
  private onShowAllClick = () => {
  + // read number of visible tiles before we mutate it
  + const numVisibleTiles = this.numVisibleTiles;
  const newHeight = this.layout.tilesToPixelsWithPadding(this.numTiles, this.padding);
  this.applyHeightChange(newHeight);
  this.setState({height: newHeight}, () => {
  - this.focusRoomTile(this.numTiles - 1);
  + // focus the top-most new room
  + this.focusRoomTile(numVisibleTiles);
  });
  };
  