I have replicated this issue using version 1.18.31 on 05/22/22 on PC and PS5 and the issue exists!
Problem: Guardians do NOT spawn within soul sand bubble elevators.
Why it's a problem: This is an unfortunate issue because Guardian Farms are a rare and challenging achievement! Few players will try in the first place, and even fewer will now be successful with the resurgence of this bug.
Edit 05/23/22: Additional 5 hours of observation spawned a single Guardian. This may show that Guardian spawning within bubble columns happens either never, or with extreme rarity once the soul sand bubble elevator is built.
Cześć! Thank you for your response! I hope I'm not misunderstanding how Drowned are meant to spawn.
Unique background information about this world: I host a multi-platform SMP which is around 2-years-old and with around 8 intermittent players. It is 441MB raw and 415MB compressed. We world edited once using the 3rd-party "Amulet Editor" to bring the Caves and Cliffs update features closer to our existing builds at the time Part 2 was released. A player recently began to struggle with building a Guardian Farm and noticed multiple potential bugs which they asked me to report: Guardians rarely/never spawning in bubble columns and Drowned seeming to spawn in broad daylight and near sea lanterns just south of her farm.
How can I send you this world?: The server is live and I'd be glad to DM the information to you for a visit. Alternatively I can host the world download on something like Swisstransfer.
[media]