OFI - [Fabric]

MC-577 - Mouse buttons block all inventory controls that are not default
MC-4490 - Fishing line not attached to fishing rod in third person while crouching
MC-22882 - Ctrl + Q won't work on Mac (disabled by default)
MC-12829 - Flying through ladders/vines/scaffolding in creative mode slows you down
MC-26757 - Large item tooltips can get cut off at the edges of the screen
MC-46766 - Mining a block in Survival, then changing to Spectator creates a breaking animation and sound
MC-55347 - Title with long duration shows in other world
MC-59810 - Cannot break blocks while sprinting (Ctrl+Click = right click on macOS) (macOS only)
MC-79545 - The experience bar disappears when too many levels are given to the player
MC-80859 - Starting to drag item stacks over other compatible stacks makes the latter invisible until appearance change (stack size increases)
MC-90683 - "Received unknown passenger" - Entities with differing render distances as passengers outputs error
MC-93384 - Bubbles appear at the feet of drowning mobs
MC-108948 - Boat on top of slime blocks hover over block
MC-111516 - Player flickers/turns invisible when flying at high speeds
MC-112730 - Beacon beam and structure block render twice per frame
MC-116379 - Punching with a cast fishing rod in the off-hand detaches fishing line from rod
MC-121772 - Can't scroll while holding SHIFT on macOS
MC-122627 - Tab suggestion box has missing padding on right side
MC-123739 - Recipe book entries are not sorted in any meaningful manner. In fact, the order can even change randomly after a reload.
MC-122477 - Linux/GNU: Opening chat sometimes writes 't
MC-127970 - Using riptide on a trident with an item in your off-hand causes visual glitch with the item in your offhand
MC-135973 - Can't hold Q to drop items rapidly from container inventories
MC-140646 - Text fields don't scroll while selecting text with Shift
MC-143474 - Respawning causes your hotbar to reset to the first space
MC-145748 - Clicking a settings button when there's a slider under the mouse in the next screen plays the click sound twice
MC-147605 - Text cursors can exist in multiple fields
MC-151412 - "Edit Server Info" window does not focus "Server Name" text field automatically
MC-159163 - Quickly pressing the sneak key causes the sneak animation to play twice
MC-162253 - Lag spike when crossing certain chunk borders
MC-165381 - Block breaking can be delayed by dropping/throwing the tool while breaking a block
MC-165595 - Guardian beam does not render when over a certain "Time" in level.dat
MC-176559 - Breaking process resets when a pickaxe enchanted with Mending mends by XP / Mending slows down breaking blocks again
MC-183776 - After switching gamemodes using F3+F4, you need to press F3 twice to toggle the debug screen
MC-197260 - Armor Stand renders itself and armor dark if its head is in a solid block
MC-215531 - The carved pumpkin overlay isn't removed when switching into spectator mode
MC-217716 - The green nausea overlay isn't removed when switching into spectator mode
MC-227169 - The main hand is broken when you hold a crossbow loaded into the secondary hand
MC-228976 - Entity collision is run on render thread
MC-231097 - Holding the "Use" button continues to slow down the player even after the used item has been dropped
MC-233042 - Server Address field isn't focused when Direct Connection menu is opened
MC-237493 - Telemetry cannot be disabled
MC-249059 - Loading terrain screen cannot close before 2 seconds have passed

[1.16.1 - 1.16.2]

MC-192362 - Certain mobs cause log error spam in Mob Spawners

MC-189565 - Some entities do not render inside of spawners and producing error log spam in console, potentially causing lag