I have a GP widget published to our Enterprise environment. There is a parameter exposed for user-input from a field within a feature class.
Why doesn't the GP widget poll/return all available records in the field?
If you are using REST services on your widget, then you are probably limited by the setting MaxRecondCount. You can change the limit on the ArcGIS Server Manager.
Why would the behavior be different when consuming the published GP tool in Pro and Map Viewer then? This only occurs with the GP Widget in App builder....
Update on further testing: