Playing duels, my opponent played an Imprisoned Antean into my objection. Objection triggered, but then the dormant counter to wake up triggered the next two turns and it dealt 10 damage. The replay still shows it on board, but it was invisible in client. I didn’t try restarting to see if it appeared so I could have the full replay to share. Image shows later turn with a minion on each side. The Antean on board here is another one summoned afterwards, as shown in the replay.
https://hsreplay.net/replay/Avi2YQTfJjfLiqHbXbimqU
https://imgur.com/a/bx2Z3a7