message: refactor:consider checking if no placeholder
diff: @@ -149,15 +149,17 @@ export default class BasicMessageEditor extends React.Component {
  const position = selection.end || selection;
  this._setLastCaretFromPosition(position);
  }
  - if (this.props.placeholder) {
  const {isEmpty} = this.props.model;
  + if (this.props.placeholder) {
  if (isEmpty) {
  - this._formatBarRef.hide();
  this._showPlaceholder();
  } else {
  this._hidePlaceholder();
  }
  }
  + if(isEmpty) {
  + this._formatBarRef.hide();
  + }
  this.setState({autoComplete: this.props.model.autoComplete});
  this.historyManager.tryPush(this.props.model, selection, inputType, diff);
  TypingStore.sharedInstance().setSelfTyping(this.props.room.roomId, !this.props.model.isEmpty);
  