Minecraft wiki entry for Development_versions, associated text: MC-181418 – Entity names can no longer be colored.
MC-181424 – Fish (and other items from fishing) cannot be caught with a fishing rod.
MC-181461 – Enchantment glint does not render on elytra, shields, and tridents.
MC-181479 – Map marker labels do not render properly.
MC-181524 – Redstone does not visually connect when going up soul sand.
MC-181944 – Font of category/section text in creative mode item selection screen is much thicker than in 1.15.2.
MC-182595 – Parity issue: blackstone does not generate in ore blobs in nether wastes.