Did anyone else have this problem? My Dragon Week timed research disappeared before the end of the event and I could not catch / collect the second Deino. I completed all tasks well before the event ended but the research tab vanished the morning before the event ended. I restarted the app but the research tab did not come back (as Niantic help pages said it would). The app updated that same morning so I suspect that may be involved.
Informed Niantic support and waiting on a reply. Anyone else experience this?