message: Fix reacting to messages with reactions from other users
diff: @@ -75,7 +75,7 @@ class ReactionPicker extends React.Component {
  return {};
  }
  const userId = MatrixClientPeg.get().getUserId();
  - const myAnnotations = this.props.reactions.getAnnotationsBySender()[userId];
  + const myAnnotations = this.props.reactions.getAnnotationsBySender()[userId] || [];
  return Object.fromEntries([...myAnnotations]
  .filter(event => !event.isRedacted())
  .map(event => [event.getRelation().key, event.getId()]));
  