I can watch videos back to back now, without timer.
Update: looks like it was temporary… The timer is back again: https://imgur.com/a/mkNizoE
But I was able to get a chest and boosted 3 Taverns for gold.
What might be causing this bug ?? It’s obviously connected to tavern. I was able to watch video when one of my tavern got upgraded to lvl 13. But it came back after a few minutes. Relogging didn’t change the fact that I was still able to watch videos. Hope it helps to devs.