Platform, device version and operating system:
In Raid the boss it has happened several times that when a color potion is being exploded by the potion in the first turn, I loose my turn and it goes to the AI. So far I haven’t lost a fight because of it but it came close a couple of times because of a cascade caused by the gems created by the color potions.
So far this bug has only shown up in the Raid.
Small addition to the previous:
Same bug now turned up in the world event "Vessel of Starlight.