Robin Thicke, Paula Patton Square Off with Cops Again In Custody War

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Robin Thicke and Paula Patton got into it again in their custody war, and cops rushed to the scene again.

We’ve learned the incident went down Thursday at a Malibu park, where Paula was supposed to hand off 6-year-old Julian to the court-appointed monitor so Robin could have his visit. We’re told Robin was also present, but here lies the conflict.

Sources connected with Robin tell TMZ the singer was aware Paula has a restraining order but he never came…