it is very common nowKid's vv refused: Applied on 17th Dec 2021 for my newborn kid and got refusal on 4th Jul with generic comments like you wont go back and insufficient funds. Attorneys are mentioning that the IRCC refused it by mistake, because there is no sense of rejecting dependent child's visa when both parents have valid WP. Also mentioned that they have never seen such a case. Attorneys are now challenging the refusal and re-applying parallelly.
Check the Federal court site to see how many such refusals are handled.