[Not a bug] IKEA  20 Store 33k of Goods in one station
Server does periodic checks for quests completion rather than detecting it immediately. So it takes a bit of luck to get it to 33k right when server does the check.
I understand But the amount of goods at the station should be 33 but not 33000 and 337920
What do you mean? It will be complete as long as you have at least 33000 crates of goods on your station at the time of check.