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Data Inconsistency in Partitioned/Sub-partitioned Materialized View during Fast Refresh

in Database DataWarehousing (MOSC) Question

Database: Oracle 19c (Version 19.3.0.0.0) running on Linux
MV Configuration: List partitioned by business_date and sub-partitioned by tx_id and movie_id.
Refresh Method: FAST REFRESH ON COMMIT (Build Deferred).
Optimization: ENABLE QUERY REWRITE is active.

Problem Statement:
Data is missing from certain partitions within the Materialized View (MV), even though the corresponding records exist in the base tables (transaction_detail and direction_details).

Observations:

Query Discrepancy: Running the underlying SELECT statement with the /*+ NO_REWRITE */ hint returns the "missing" data correctly. However, querying the MV directly does not show these records.
Refresh Behaviour: Even after performing multiple COMPLETE refreshes, the missing data does not appear in the MV.

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