Minecraft wiki entry for Development_versions, associated text: MC-1601 – Breaking a furnace will not give the player experience for the smelted things inside.
MC-5410 – In creative mode, flying down is stopped when brushing up against ladders or vines.
MC-31032 – Using only one empty map does not increase minecraft.used:minecraft.map.
MC-46417 – Sprint particles are emitted in spectator mode.
MC-56373 – Selector and score text components do not work on hoverEvents.
MC-63020 – Some chunks are not rendered in the first person from some angles in certain situations (incorrect frustum culling).
MC-94535 – Flying and holding Ctrl close to the ground emits walking particles.
MC-96319 – Mob pathfinding AI does not regard some blocks as obstructions and is unable to pathfind on top of them.
MC-108598 – Client rendering other player or mob holding compass influences compass of user.
MC-114544 – Kicked by "Flying is not enabled on this server" while sleeping.
MC-117710 – Bonus Chest setting is not copied when re-creating world.
MC-117805 – Oak trees can generate right below height limit (y = 256) resulting in an incomplete tree.
MC-120572 – /recipe crashes the game.
MC-126244 – /locate, explorer maps, and treasure maps can cause extreme TPS lag, even leading to a complete server freeze if structure generation is turned off.
MC-131360 – Music sometimes stops abruptly when you go underwater.
MC-132926 – The width of an advancement's description depends on the first line.
MC-135738 – Bossbar names that have scores don't update as intended after exiting and re-entering the world.
MC-144622 – Using /data modify to set the name from a block only works once.
MC-149704 – Sneaking/crouching twice makes player sprint.
MC-149792 – Client book length mismatch resulting in crash.
MC-151364 – Feeding a dolphin causes a crash when structure generation is turned off.
MC-169514 – Tamed parrots cannot be renamed unless they are flying.
MC-170075 – "Online play is not rated" checkbox has no outline when focused.
MC-171939 – Many mobs are placed incorrectly in the statistics.
MC-176104 – Dropped compasses always point up.
MC-177346 – A compass in a mob's hand does not point to correct location if the mob turns.