Stitch JSONB field sync is randomly sending null

[NikAtSpark]

StR:

• Source DB is hosted in Postgresql 11.12, changes detection is WAL based
• Stitch driver version is v2
• Source table contains JSONB field entries
• Destination DB is in MS SQL
• Destination entries for the same table sometimes contain NULL in string field entries mapped from Postgresql field entries in source tables.

The issue does not seem to be related to data, as it reproduces randomly, and could load (or not, it seems that it's randomized) the same entry correctly if doing full table sync instead of WAL-based CDC.

The issue is critical as it's affecting our production users.
Please assist.