Bypass credit limit in sales order

hello community .
there is a way to bypass credit limit in sales order I don’t it’s a bug or what.
Image the customer have 1000$ credit limit . then create a sales order of 900$ (submitted). then create another sales order of 500$ . apparently you can’t submit the second one because of the credit limit . but now go back to the first one and close it . after that submitting the second sales order is possible . later you can open the first closed sales order and reopen it . and voila 2 sales order with sum of 1400$ both submitted . what’s the issue here . I already submitted a bug report 2 weeks ago in github .