I was doing the conquest where we have to upgrade 3 gems to level 65 and I had 1 gem on 65 and 1 on 64 and one on 57 and as soon as I upgraded the one that was on 64 to 65 it showed message on the screen task complete and congratulating me but my third gem was still on 57 and it is impossible that I had another gem somewhere else that I forgot about because it happened like on the second or third day of the new season so I didn’t have any gems that high it was only those 3. The conquest I am referring to is called (ON A GOOD DAY).
Do you have some Whisper of Atonement (Higher than level 65) in your chest (or inventory)?
If yes, then it is not a bug, Whisper being legendary gems 
3 Likes
Oh right my bad, yes a person forgets Whisper of Atonement counts as a legendary gem.