They couldn't add regular chests as a placeholder? Wow, Mojang, Wow!
And I think the invisible chests bug was fixed.
I dont know why large ferns dont drop wheat seeds.
I think its possibly a bugfix for that peony glitch thingy.
Two Enderdragons? Wow, the battle is a whole lot harder!
The new sounds are asset changes, so this issue can be supported. Perhaps you should post this issue onto the Minecraft Launcher issue tracker.