     </ScrollTracker>
 
   render: ->
-    {parts, footer} = @props
+    {parts, footer, pinned} = @props
 
     if @isSinglePart()
       return @renderSinglePart()

  displayName: 'Exercise'
  mixins: [ExerciseMixin]
  render: ->
    {footer} = @props

    if @isSinglePart()
      return @renderSinglePart()

    exerciseGroup = @renderGroup()
    footer ?= @renderFooter()

    <CardBody footer={footer} pinned={pinned} className='openstax-multipart-exercise-card'>
      <ExerciseBadges isMultipart={true}/>
      {exerciseParts}
      {exerciseGroup}
