Calculation field only displays value when cursor is in the field
I'm working on an application for a K-5 elementary school in SF for tracking families and donations.
I have a calculation field for displaying related student records in a comma seperated list using the following forumla
Substitute ( List ( Donor Students::Student Firstname ) ; ¶ ; ", " )
The field is only displaying the value when the cursor is in the field! I've checked the formatting and can't figure out what could be causing the field to not display when the cursor is elsewhere. I have many calculation fields and I've not seen this behavior anywhere else.
thnaks for your assistance.