Minecraft wiki entry for Development_versions, associated text: MC-249073 – Mangrove Fence Gate & Mangrove Fence are in the wrong tab in the creative inventory.
MC-249081 – Placing water inside the mangrove propagule breaks it.
MC-249098 – Mud brick slabs uses generic stone sound.
MC-249112 – Ender dragon fight is not triggered upon entering the End.
MC-249134 – Subtitle "Frog hatches" should be "Tadpole hatches".
MC-249143 – Mud, Mangrove Roots, and their variants are too loud in comparison with other blocks.
MC-249171 – Map color for mangrove log is incorrect.
MC-249172 – Map color for mangrove slab is incorrect.
MC-249173 – Map color for mangrove trapdoor is incorrect.
MC-249174 – Map color for mud bricks, mud brick stairs, and mud brick walls is incorrect.
MC-249181 – Powered rail / activator rail update order is reversed.
MC-249184 – The mangrove fence recipe is not grouped with the fence recipes of other wood types.
MC-249195 – Some Mangrove Propagules float after leaves decayed.
MC-249253 – Bee tries to pollinate a waterlogged mangrove propagule and dies.
MC-249270 – Mangrove leaves do not have a hoe as their preferred tool.
MC-249303 – Mangrove Leaves cannot be composted.
MC-249312 – Mud Brick Slab has a slower mining speed then other mud bricks.
MC-249316 – Mangrove fence, fence gate and boat cannot be used for fuel.