The Court of Justice delivered yesterday (16 January 2019) its judgment in case C‑386/17 (Stefano Liberato v Luminita Luisa Grigorescu), which is about the breach of the lis pendens rules in Brussels I and Brussels II bis and recognition of the decision of the court second seised:

“The rules of lis pendens in Article 27 of Council Regulation (EC) No 44/2001 […] and Article 19 of Council Regulation (EC) No 2201/2003 […] must be interpreted as meaning that where, in a dispute in matrimonial matters, parental responsibility or maintenance obligations, the court second seised, in breach of those rules, delivers a judgment which becomes final, those articles preclude the courts of the Member State in which the court first seised is situated from refusing to recognise that judgment solely for that reason. In particular, that breach cannot, in itself, justify non-recognition of a judgment on the ground that it is manifestly contrary to public policy in that Member State”.

Source: here