Why does this have to happen? If you have a dimension that spans over a view break but you wish to add a suffix, prefix etc you are unable to click on the dimension text to allow you to do this.
The only solution I have found is to un-crop the view - suffering the consequence of losing existing view breaks - and then recreate said view breaks.
In addition to the dimension example above. In the case of a detail view taken from a section view, sometimes one may wish to toggle between the cropped (and view broken) view and un-cropped view to allow them to see the contextual information. This is no possible without losing View Breaks.