message: delay DOM modification after compositionend
diff: @@ -170,8 +170,13 @@ export default class BasicMessageEditor extends React.Component {
  _onCompositionEnd = (event) => {
  this._isIMEComposing = false;
  // some browsers (chromium) don't fire an input event after ending a composition
  - // so trigger a model update after the composition is done by calling the input handler
  + // so trigger a model update after the composition is done by calling the input handler.
  + // do this async though, as modifying the DOM from the compositionend event might confuse the composition.
  + setTimeout(() => {
  this._onInput({inputType: "insertCompositionText"});
  + }, 0);
  + }
  +
  }
  _onPaste = (event) => {
  