I have some logic to analyze customer's subscription payments on server side. At all time I worked with subsctiptions I find some unexpected things (issues with dates, different behaviour of sandbox and production environments, unexpected responses from API), but this one is unacceptable for my mind:transaction_id may changes!For now I have about 1400 transactions which changes their transaction_id. Most of them were increased by 1 (but also possible to find several which has transaction_id increased by 2-4). Other transaction data has not been changed.Does anybody catch the same? Should I report a bug?Thanks.