This is happening on 18w50a.
Still happens in 18w50a. I spawned an iron golem in The End. The iron golem attacked an endermen, then endermen teleported to the top of a pillar and the iron golem stayed at a certain distance from the pillar attacking the air forever.
I would add that on 18w50a throwing a riptide trident at a mob (any level works) will 1 hit kill the mob.
I tried with pillagers and drowned (under water) they all die when you collide with them.
This is everywhere,, not only in the shattered savanna. I have prints from pretty much all biomes with lots of Tetris blocks floating in the sky. You guys can call a bug a feature if you are not willing to fix it...
This issue is not resolved. It still affects 1.13.pre-1. Besides, the music keeps playing even when switched off.
Issue persists in 18w21a.
I do not get breathing bubbles while swimming in a column of flowing water. I only get the bubbles in the water-source block.
Still happening on 18w50a.