Named Query binding not working

Named query update binding not working. Select binding is working. Manually, named query update binding working but bind to component then not working.

Is Load_Num really a string column? If not, change the Named Query’s data type for the :LoadNumber parameter.

Load_Num is string.
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I observed that same named query is working on property change event
event.propertyName==“text”:
(Named query changed slightly to add column name in query)

Hence thought that the “Text Field” value change event is not trigger the Update Query. Also I have checked with 8.0.6 (b2019111216) and observed same issue.