Can not search via filters in the orders app consistently

Overview: Not all search filters work all the time in the Orders app. Example: the "Vendor" filter appears to work in the "Orders" segment, but not the "Order lines" segment. Search on any active vendor in the "Orders" segment, and appropriate results are returned. A search on the same vendor in the "Order lines" segment yields no results. Additionally, searching under POL numbers in the Order lines segment does not return results.
Steps to Reproduce:

1. Log into some FOLIO 
2. go to Orders app, Order lines segment 
3. Search on a known vendor, prefix, suffix, or fund code. Each of these filters uses a drop-down list, or in the case of vendor, a look-up search. 

Expected Results: System returns results in the Order lines segment
Actual Results: System returns zero results in the Order lines segment, despite there being POLs in the system that fit the search criteria. 

Additional Information:
URL:
Interested parties: dhowell