(Note: I have checked this both on bedrock and java with next to no differences.)
With this recent update, a few things work but others dont. Such as ghasts are no longer in existance and cant be spawned in. Even when Iām in creative. (In bedrock nothing happens at all. In Java it tries to spawn but immediately dies so fast you can only see/hear it for a split second.) Anything in the shader department is non- existant and info on why is not something ive yet found. This is also causing other entities to not spawn even in creative and honestly is just leaving me a bit dissapointed.
I have no problems getting ghasts and other mobs to spawn. Is your world set to Peaceful difficulty? And for natural spawns, is the doMobSpawning gamerule set to true?