The CJEU delivered yesterday its judgment in case C‑522/20 (OE v VY), which is about Article 18 TFEU and Brussels II bis :

« The principle of non-discrimination on grounds of nationality, enshrined in Article 18 TFEU, must be interpreted as not precluding a situation in which the jurisdiction of the courts of the Member State in the territory of which the habitual residence of the applicant is located, as provided for in the sixth indent of Article 3(1)(a) of [Brussels II bis] is subject to the applicant being resident for a minimum period immediately before making his or her application which is six months shorter than that provided for in the fifth indent of Article 3(1)(a) of that regulation on the ground that the person concerned is a national of that Member State ».

Source : https://curia.europa.eu/juris/document/document.jsf?text=&docid=253726&pageIndex=0&doclang=EN&mode=req&dir=&occ=first&part=1&cid=2334783