So I was playing along with the st patricks event today, got a sparkle and went thru it to find that the cave was completely empty. So I checked the clock and it said 'inactive'. Is this a bug or is this normal that some of the sparkles just move you into an empty cave with no working spawners?
Late but, It happened to me a few times, if you wait a bit, maybe 15-30 seconds, the cave will be active again. At least that was my experience!
