Minecraft wiki entry for Development_versions, associated text: MC-138112 – Woodland mansion doesn't generate correctly.
MC-138245 – Mossy stone bricks can still be used in stone brick stair/slab recipe.
MC-139717 – Game hangs while trying to load chunks.
MC-139878 – Game hangup while saving world.
MC-140346 – Jungle bushes no longer generate on jungle floor.
MC-140529 – Suspicious stew from dandelion or blue orchid give a lasting instant effect.
MC-141100 – Entities clip through blocks in superflat worlds.
MC-142650 – Mobs entering a composter never leave the composter.
MC-142685 – Green item frame map markers are not removed in all cases.
MC-142696 – Shift clicking result of cartography table deletes held item.
MC-143578 – Firework disappears when launched under block.
MC-144132 – Polar bears inconsistently attack foxes.
MC-144560 – The player falls into the ground when entering ungenerated chunks.
MC-144579 – Villages generate one block too high with superflat "Snowy Kingdom" world generator.
MC-144647 – Flying with elytra in water or turning certain angles in air makes the player's legs move fast.
MC-145201 – Small slime hitbox is incorrect.
MC-145317 – Lighting on magma blocks behaves weirdly – darkens the area around them.
MC-145654 – "Decapitated" baby polar bear.
MC-145693 – F5 camera freezes when the player model looks straight up and down.
MC-145774 – Several buttons and sliders can be highlighted at the same time in menus.
MC-145804 – The enderman plays teleport sounds while stuck inside the boat.
MC-145970 – Crossbow loads firework rockets from inventory and hotbar.
MC-145974 – Firework rockets shot from players do not have the correct velocity.
MC-145975 – Crash whilst rendering screen: java.lang.IndexOutOfBoundsException: Index: 0, Size: 0.
MC-146155 – When accessing a screen which has a text field selected by default using the "space" key, a space gets typed into that text field.
MC-146156 – Cannot access scrollable button menus (such as video settings) using the keyboard only.
MC-146169 – Villagers teleport out of minecarts when beds are in reach.
MC-146890 – In video settings, clicking the left buttons will instead select the right buttons.
MC-147062 – The scrollbar in the controls menu does not work.
MC-147184 – Unable to close anvil using inventory key without clicking away.