NonBlockWorkflow double processing and not pausing

Here is the case i ran:

4 Workflows:

MoaOrbits : consists of 1 task

{MoaOrbits}

MoaIasiGPolygonMap : consists of 2 task

{MoaIasiGPolygon, MoaIasiMap}

MoaAmsuaGPolygonMap : consists of 2 task

{MoaAmsuaGPolygon, MoaAmsuaMap}

MoaMhsGPolygonMap : consists of 2 task

{MoaMhsGPolygon, MoaMhsMap}

I summit MoaOrbits workflow. On ingest of its primary product MOA_ORBITS, it summits (via a cas-crawler action) all 3 GPolygonMap workflows in the order given above.
None of the GPolygonMap workflows are related to each other in any other way.

Required Task Input:

MoaOrbit task: a days worth of IASI files
GPolygon tasks: the Orbit file created by MoaOrbits task and a days worth of the appropriate METOPA L1 files (IASI | AMSUA | MHS)
Map tasks: the GPolygon file created by the GPolgon task in the same workflow

This is how it is expected to run and currently runs with standard workflow engine:

MoaOrbits run successfully and ingests a MOA_ORBITS product
MoaIasiGPolygonMap runs successfully ingesting a MOA_IASI_GPOLYGON product and a MOA_IASI_MAP product
MoaAmsuaGPolygonMap fails when generating a MOA_AMSUA_GPOLYGON product (which is not ingested) and thus the MoaAmsuaMap task fails to ever pass conditions to run
MoaMhsGPolygonMap runs successfully ingesting a MOA_MHS_GPOLYGON product and a MOA_MHS_MAP product

This is how it runs with non-blocking workflow engine:

MoaOrbits run successfully and ingests a MOA_ORBITS product
MoaIasiGPolygonMap runs TWICE successfully ingesting 2 MOA_IASI_GPOLYGON products and 2 MOA_IASI_MAP products
MoaAmsuaGPolygonMap fails when generating a MOA_AMSUA_GPOLYGON product (which is not ingested) and the MoaAmsuaMap task fails to ever pass preconditions to run and
instead of waiting a few seconds between checking conditions it dumps to the logger this message many times a second: INFO: Task: [MoaAmsuaMap] has no required metadata fields
MoaMhsGPolygonMap runs TWICE successfully ingesting 2 MOA_MHS_GPOLYGON products and 2 MOA_MHS_MAP products

The short of it seems like workflows with > 1 task get run twice and workflows with task that block have no wait time between rechecking conditions