The issues at hand are that neither phantoms nor drowned are operating correctly. Firstly, phantoms don't seem to spawn in older chunks in my world. Secondly, I've created a drowned farm, and I've been letting it go for hours, but have not received one singular trident for its entire duration. I believe that perhaps this bug is pertaining to older chunks not fully implementing the latest updates features. (yes, the drowned farm was within these chunks, but used a zombie spawner to create a base source for drowned.)