Fixed in 23w16a
MC-257178 seems to be describing the weird behavior that existed when hopper support was added to the chiseled bookshelf, yet their slots could only be accessed in a particular order. The hopper would still pull from the first slot that it could rather than the last slot, and at the same time the appearance of the bookshelf couldn't be updated correctly so it got all sorts of weird stuff happening. Since they actually allow you to access any slot of the bookshelf now, this behavior can be written off as a relic of the past, really no longer applicable. This is something different.
My world was created in 20w20b I think. I updated to 1.16 rc1 before ever entering the end. I'm not sure if that would affect anything. Also, if I reset my end will that allow for the patch in 20w22a to work or do I need to change some other file?
I just killed the dragon in release candidate 1 and no end gateway spawned. It is clearly not fixed for me.
The crafter has an nbt value for crafting_ticks_remaining which gets set to 6 every time you craft something, however, the value gets set to 0 again the next tick, so this is most likely unintended behavior.