Catalyzes the hydrolysis of fructose 1,6-bisphosphate to fructose 6-phosphate in the presence of divalent cations and probably participates in glycogen synthesis from carbohydrate precursors, such as lactate. {ECO:0000269|PubMed:17350621, ECO:0000269|PubMed:18214967, ECO:0000269|PubMed:33977262}. This is the function of FBP2 (fructose-bisphosphatase 2, ENSG00000130957).