Jumbo, why do you again here too try to claim some "bogus reasons" ie bugs if you really have no real info on it ..? Sort of annoys me, sorry to say. If you really think some part of the system has a bug then you should post a proper bug report to that subforum, instead of rumours of your own like now.
Anyways.. The route he shows operates only once a week. If it was just set up he naturally has to wait until that day has passed befoe the flight is shown. And if the plane was in maintenance or B check for example it may have overriden the flight like it's supposed to be, and due to that it may take even 2+ weeks before you see anything there. Which is normal for that, and people do from time to time pose this same question as the route history data does not show anything for new routes in these cases.
If the flight really is cancelled it will be displayed there - again after the day it was supposed to fly.
And if you check the route now, it has been flown and displayes the results normally (it is now 23-Jun and route was flown on 06, 13, and 20-Jun so everything is normal). So I bet you just made the route and then B check was due etc.