Checkbox losing event when moving in and out of edit mode

I am having trouble when moving in and out of edit mode in ckeditor. I have a label that is linked to a checkbox (via the for attribute). When i click the label it updates the checkbox as expected (GOOD). Although when i put the page into edit mode then out of edit mode the functionality no longer works. I think it may be a ckeditor config issue , but am new to this product so am not sure.

  <div class="xs">
  <div class="x tech selected"><input id="TECH555" type="checkbox" class="checkbox"><label for="TECH555"><span class="fa fa-check"></span></label></div>
</div>

Thanks BF