Game # 875126762
As you can see in the attached image, no flying counters were placed.
There was a +1+1 counter on it before the ability was triggered, so maybe it has something to do with it.
There was a phenomenon that seems to be a bug related to 《Splashy Spellcaster》.
I was playing in a BO1 draft league, and my opponent cast 《Into the Fae Court》 while controlling 《Splashy Spellcaster》, and 《Splashy Spellcaster》 gained Sorcerer Role token.
At league#7691 Match#261714322 Game#850157206.
As for my pc, I turned off the volume mixer in windows 10 to play MO and it improved a lot.
The problem was that when I played MO with it turned on, it got heavier and heavier. (When it was bad, I had to restart MO after each game).
I don't know if it works in other environments, but if you are...