Dropdown Record Filter Field Displaying All Values as a Single Option

The dropdown field is malfunctioning, displaying all available values as a single combined option instead of presenting them as separate selectable options.

Any idea what might cause this behavior. 

This is the expression that I am using: 

a!queryRecordType_24r4(
recordType: 'recordType!{2c57b299-d666-427e-ba44-342541c31f8f}AMS Workflow Type',
pagingInfo: a!pagingInfo(1, 5000)
).data['recordType!{2c57b299-d666-427e-ba44-342541c31f8f}AMS Workflow Type.fields.{81363ed4-9bc0-44f3-b5ef-e723de125744}description']
when i test it separately as an expression it gives me a list and not a single unit