On the patron bill screen, if a patron has forgiven closed bills and the item details of one of those bills are displayed, the item detail of the first open bill shows 2 arrows rather than one. Clicking on the item detail of the open bill open and immediately closes that item detail.
Opening the item detail of a second forgiven closed bill causes the same problem with the second open bill in the list.
This happens only if the closed bill is forgiven. It does not happen, for instance, if the closed bill was fully paid.
Screen shots are attached.