Save Data issues
MC-3208Command /save-off does not turn off autosaving on server shutdown
LowMC-26304Brewing stands reset brew cycle when unloaded
Fixed
MC-59626Arrows lose their Punch enchantment property when unloaded
Fixed
MC-81656Field determining whether or not a wither skull is blue is not saved to and read from NBT
Fixed
MC-92921Delayed application/detection of attribute modifiers (default & custom)
Confirmed
MC-111453Boost from firework is lost upon relogging
Low MC-114394Structure block mode is saved in both block state and nbt data
Confirmed
MC-115237World and/or player data gets corrupted if a server is suddenly shut down
Important MC-123693TileTicks are saved with world position instead of offset in chunk
Invalid
MC-124365Exiting world does not release file handle to zipped datapack / resourcepack
Fixed
MC-126171Underwater visibility resets when re-entering world
Low MC-134573The game freezes while doing a world backup
Normal MC-134941Furnaces still save CookTimeTotal, despite being replaced in the recipe format
Confirmed
MC-134942Moving blocks save the moving direction in both block state and NBT
Confirmed
MC-135195Empty item frames do not maintain rotation during re-log
Confirmed
MC-135552Dead Entities are saved to chunk
Fixed
MC-135870Pre-anvil mapchunks acting as new chunks in new 1.13+ chunk format
Confirmed
MC-169433Worlds are "deleted" when shutting down the computer without saving the world
Low MC-177378MCA (Anvil) file headers use 32-bit dates for file modification time (year 2038 problem)
Plausible
MC-179688Trading with a Cartograph Villager creates hundreds (potentially thousands) of junk files in your world's region folder
Won't Fix
MC-181681Pets do not respond to right click / won't stand up after playing offline
Normal MC-183791Walking target not saved, mobs moving to a block stop moving on reload
Confirmed
MC-193198Level.dat, Level.dat_old and player files in the playerdata folder can become corrupt in certain situations
Fixed
MC-195830The "minecraft:movement_speed" attribute resets upon reloading the world
Low MC-196230Pets tamed in the demo version of the game don't respond to player after restart
Low MC-197433Chunk Inhabited Time has no apparent effect on Local Difficulty in Servers
Duplicate
MC-197521World menu doesn't update when worlds are being removed/moved in, unlike resourcepack and datapack screen.
Invalid
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