Sort:  

yes, of course i can detect the situation.

and one way to resolve this by using history only is adding more sort key (txid should be enough) which is the way i'm thinking of atm. But it'd be much better if the api itself returns them consistently.

e.g., steem has transaction_num and based on https://steem-engine.rocks/b/1896844 steem-engine seems to have such a thing. then why not returning them consistently.