Since the field boss and the chaos gate still resets at 11 AM CET, but at the moment the server reset is first at 12 PM CET. So if you do gate or boss at 11 and again 1 hour later you will be able to get double reward.
Thanks for reporting this. I’ll get this over to the team.
correction i didnt test chaos gate yesterday since i did field boss, it seems its only field boss there have the double reward.
Thanks for letting me know.