Debugify Features

A complete breakdown of every feature, fix category, and configuration option in Debugify for Fabric 1.21.11.

🐛 70+ Bug Fixes

Every fix in Debugify targets a real, documented bug from the official Mojang bug tracker. Each patch is individually toggleable and covers issues ranging from visual glitches to gameplay-breaking mechanics.

  • 30+ client-side fixes for rendering, UI, and input
  • 31+ server-side fixes for entity, world, and mechanic bugs
  • Every fix linked to a Mojang bug tracker ID (MC-XXXXX)

🖥 Client & Server Support

Debugify includes both client-side and server-side fixes. Install it on your client for singleplayer fixes, or on your server to fix bugs for all connected players.

  • Client fixes: rendering, UI, input, animations, overlays
  • Server fixes: entity AI, world generation, mechanics, NBT
  • Server fixes also apply in singleplayer on the client

⚙ GUI Configuration

Toggle every individual bug fix through a clean graphical interface. Requires Mod Menu for GUI access, or edit the JSON config file directly for headless/server setups.

  • In-game GUI via Fabric's Mod Menu
  • JSON config at .minecraft/config/debugify.json
  • Per-fix enable/disable toggles

📦 Replaces 12+ Mods

Debugify consolidates the functionality of over 12 single-fix mods. One install instead of twelve. No conflicts — the replaced mods can still be used alongside if desired.

  • BetterShields, No Telemetry, ToolTipFix
  • ChunkSavingFix, ForgetMeChunk, Title Fix Mod
  • Entity Collision FPS Fix, Skeleton Aiming Fix, and more

🚀 Lightweight & Focused

Debugify is purely a bug-fix mod. It adds no new features, no new blocks, no new mechanics. Minimal performance impact with maximum stability improvements.

  • No added features beyond bug fixes
  • Negligible performance overhead
  • Open source under LGPL-3.0

📦 Modpack Friendly

Designed for modpack integration. A config option defaults new bug fixes to disabled, giving modpack maintainers full control over which fixes are active between updates.

  • Default-off option for new fixes
  • No conflicts with replaced mods
  • Stable across Minecraft updates

All Client-Side Fixes

30+ fixes for rendering, UI, input, animations, and overlays.

MC-577Mouse buttons block all inventory controls not set to default
MC-4490Fishing line not attached to rod in third person while crouching
MC-12829Flying through ladders/vines/scaffolding in creative slows you down
MC-22882Ctrl+Q won't work on Mac
MC-46766Mining in Survival then switching to Spectator shows breaking animation
MC-55347Title with long duration shows in other world
MC-59810Cannot break blocks while sprinting on macOS
MC-79545Experience bar disappears with too many levels
MC-80859Dragging item stacks over compatible stacks makes them invisible
MC-90683Unknown passenger error with differing render distances
MC-93384Bubbles appear at feet of drowning mobs
MC-105068Shield block plays normal hurt sound
MC-108948Boat on slime blocks hovers over block
MC-111516Player flickers/invisible when flying at high speeds
MC-112730Beacon beam and structure block render twice per frame
MC-116379Punching with cast fishing rod in off-hand detaches line
MC-122627Tab suggestion box missing right-side padding
MC-122477Linux: Opening chat sometimes writes 't'
MC-127970Riptide with off-hand item causes visual glitch
MC-143474Respawning resets hotbar to first slot
MC-159163Quick sneak press plays animation twice
MC-165381Block breaking delayed by dropping tool while breaking
MC-176559Breaking resets when Mending pickaxe mends by XP
MC-183776F3+F4 gamemode switch requires pressing F3 twice after
MC-197260Armor Stand renders dark in solid blocks
MC-215531Pumpkin overlay stays in spectator mode
MC-217716Nausea overlay stays in spectator mode
MC-227169Main hand broken with crossbow loaded in off-hand
MC-231097Holding 'Use' slows player after dropping item
MC-237493Telemetry cannot be disabled

All Server-Side Fixes

31+ fixes for entity AI, world generation, mechanics, and NBT. Server fixes also apply on client in singleplayer.

MC-2025Mobs escape fenced areas / suffocate when loading chunks
MC-7569RCON output has newlines removed
MC-81872x2 jungle/spruce sapling arrangements cannot grow
MC-30391Chickens, blazes, wither emit particles on landing
MC-69216Switching to spectator while fishing keeps rod cast
MC-81773Bows/tridents drawn in survival can fire in spectator
MC-88371Ender Dragon flies into void when portal destroyed
MC-89146Pistons forget update on chunk reload
MC-93018Wild wolves show breeding hearts but don't breed
MC-100991Fishing rod kills don't count as kills
MC-119417Spectator can occupy bed after gamemode switch
MC-119754Firework elytra boost continues in spectator
MC-121706Skeletons/illusioners don't look up/down while strafing
MC-121903Command block minecarts don't save cooldown to NBT
MC-129909Spectators continue consuming food after switch
MC-132878Armor stands destroyed by explosions produce no particles
MC-135971CTRL+Q doesn't work in crafting table
MC-155509Puffed pufferfish hurts player while dying
MC-160095End Rods only break Cactus when moved by pistons
MC-179072Creepers don't defuse on gamemode switch
MC-183990Group AI breaks when target dies
MC-199467Entity animations stop after existing too long
MC-200418Cured baby zombie villagers stay as jockey
MC-206705Spyglasses stay in use in spectator
MC-206922Items from lightning kills instantly disappear
MC-214147Leather armored skeletons still convert to strays
MC-215530Freezing effect stays in spectator mode
MC-223153Raw Copper block uses stone sounds
MC-224729Partially generated chunks not saved sometimes
MC-231743Used stat doesn't increase when planting in pots
MC-232869Adult striders spawn with saddles in peaceful