Additional lookup values do not show when lookup is empty
It is possible to add additional values to lookup fields, besides the values returned by the lookup query/rule. However, if the lookup fails or does not return anything, then the additional values are not visible either and they should be.
Use case is an address lookup field that searches for an address. We add an additional field value called "Manually Enter Address" that allows the user to manually enter the address. This value, when selected, shows additional fields to enter the address into. What is happening is, when the address search returns no records, the "Manually Enter Address" option is not visible when it absolutely should be.