Core Keeper 1.2.1.3 - Stability Patch Notes (20th May 2026)
Core Keeper's latest patch closes an infinite Titan Breath exploit and fixes a string of bugs affecting automation, PvP, and Xbox visuals.
A few of these fixes are more than housekeeping. The 1.2.1.3 stability patch, out today, closes an exploit that let players fire the Titan Breath indefinitely without burning any mana by holding both attack buttons at once. If you've been on the receiving end of that in PvP recently, now you know why it felt wrong.
On the automation side, circuits, conveyor belts, drills, doors, levers, turrets, and pressure plates now regenerate health over time, bringing them in line with every other placeable object. Sprinklers also got a fix so they'll keep watering crops even when no players are nearby, which matters a lot if you're running an unattended farm setup. Robot Arm filters extracting from Fishing Nets and Critter Catchers now work correctly too.
Xbox Series players get a specific fix for The Shimmering Frontier biome, which was rendering with washed-out shaders and looking noticeably flat. There's also a new Master volume option added to audio settings, and a batch of inventory animation and UI responsiveness fixes that should make the whole experience feel tighter. Full patch notes below.
Full Patch Notes
1.2.1.2 - Stability Patch
Gameplay
- Circuits, conveyor belts, drills, doors, levers, turrets, and pressure plates now regenerate health over time, matching the behavior of other placeable objects.
Audio
- Added a Master volume option.
Miscellaneous
- Suppressed excessive log warnings about host not keeping up with the update frequency target.
Bug Fixes
- Sprinklers now keep the ground watered even when no players are nearby.
- Robot Arm filters now correctly apply when extracting items from Fishing Nets and Critter Catchers.
- The version number in the top right corner is now correctly only shown while the Settings menu is open.
- Holding the use button to open seasonal items (such as Winter Presents or Red Envelopes) in quick succession now works correctly once again.
- Fixed Beds sometimes not properly being unclaimed when a player left the game.
- Fixed minions and pets being teleported back to the player when near Cocoons.
- Fixed an exploit where the Titan Breath could be fired infinitely without consuming mana by holding both attack buttons simultaneously.
- Fixed an issue where players could still move while being forced to sleep.
- Fixed an issue that caused the Desert Guardian Pants to not be included in the Desert of Beginnings fishing loot.
- Fixed entities that heal nearby allies sometimes failing to heal all valid targets within range.
- Fixed an issue in Creative worlds where God Mode could not be toggled on.
- Fixed a bug where the final outro would not play if the world was in Guest mode with at least one non-admin player.
- Fixed an issue that would cause some inventory animations to play twice, item pickup animations to not play at all, and UI actions to feel unresponsive.
- Fixed inconsistent PvP hit detection.
- [Xbox Series] Fixed a shader issue causing The Shimmering Frontier biome to look very bland.
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Written by
Nathan LeesGaming journalist and founder of XP Gained. Covering patch notes, breaking news, and updates across 160+ games.
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