Wordlessly he outstretched a gnarled finger towards item 3 on the list: "Fixed Savage Beastfly in Far Fields sometimes remaining below the lava." Thus my introduction to the Savage Beastfly, an optional Silksong boss that has two iterations. As such, the now-fixed technical issue above with the Savage Beastfly diving into lava and never returning could be styled a positive. The loathing is so extreme that there is a whole subreddit dedicated to Savage Beastfly and all its works, with 34,000 weekly visitors. I'm surprised I haven't seen Savage Beastfly cited more in the on-going discussion of whether Silksong's overall difficulty is key to the mood, or just contrived.