father, not mother

src/js/extendedFamilyModeJS.js

@@ -525,7 +525,7 @@ globalThis.setMissingParents = function(slave) {
 	if (!specificDad(slave)) {
 		slave.father = V.missingParentID;
 		if (gp) {
-			gp.mother = slave.mother;
+			gp.father = slave.father;
 		}
 		V.missingParentID--;
 	}