Hi Chris.
As far as I can see(and tested locally) this situation happens when the approver is the same user as the 'requested for/requested by' user in the request.
The 'checkbox' to actually 'select' an option or the options, does not appear then.
When you login as e.g. 'catuser1' who's manager is 'spadmin' and open a new request with multiple options.
This request will show in the 'pending' list for spadmin.
And when 'spadmin' hits the 'approve/reject' button, the checkboxes for the options show up and can be selected(checked) as such.
Then the 'select and' function for either approve or reject will work properly.
Thanks and kind regards, Louis van Amelsfort.