Exactly as is the summary, but I was unable to find any reports for this bug on this platform (found it on reddit where it was apparently reported back in the summer of 2020). When trying to make the blaze farm featured in shulkercraft's video (https://www.youtube.com/watch?v=q7mGXe5dCHA) I noticed that blazes aren't moved by lava in my version, making the farm obsolete. Instead blazes are wandering in whatever direction they please. This is on xbox one and I'm currently in the process of slabbing a large area of the nether while working on a wither skeleton farm that uses wither roses. The differences between what I built vs the shulkercraft build is I made the drop shoot for the blazes longer (still within range to activate the spawner). Hopefully this is enough information to go off of.