Automatic Warehouse task

In an Inbound delivery if we have same product and batch in multiple line items,  Automatic Warehouse Tasks are getting created for rest of the HU after  creating WT for one HU

Inbound Process--> Receive HU via ASN. Then Select a HU and perform Unload, GR and Create WT. After that if you see the List if HU, WH task gets created for rest of the HU automatically, This auto WH task gets created even without/before GR.

I have tested this by removing conditions of PPF ( Automatic WH task for Putaway) , No good

Any idea? Note??

Thanks