Fix finding location range when all of the editor's contents are selected in FF
Fix finding location range when all of the editor's contents are selected in FF

urossmolnik/trix,GabiGrin/trix,basecamp/trix,basecamp/trix,GabiGrin/trix,urossmolnik/trix,ChenMichael/trix,GabiGrin/trix,urossmolnik/trix,ChenMichael/trix,basecamp/trix,basecamp/trix,ChenMichael/trix