I have! I'm having to collect from my 2 Ponds and 3 wells sometimes twice to get a single Skelepine to spawn, then sometimes get 2 in a row, but they're there! Echoing what the others said, if you're collecting much more than that please do be sure to check for other beasts? If there's no beasty hiding, might be an error! 😥
By "when both beasts were dropping," I meant when both skelebeast and skelepine were dropping Grubs for a brief time at the very beginning of the Event- then it was fixed so only skelepines do. I am still able to get the beast themselves to spawn/drop/appear. Sorry for the confusion!