Limbus Company Refraction Railway Line 5 Temporarily Closed Due to Bug

Project Moon has confirmed a necessary fix for an error code and crash fix related to the Refraction Railway Line, leading to a temporary closure of the mode. Following the scheduled update on March 12, 2026, a buff error was identified within the game, causing specific gameplay mechanics to function outside of their intended parameters. As a result, the developers have taken the step of closing Refraction Railway Line 5 to implement corrections and ensure the integrity of player records.

Understanding the Limbus Company Refraction Railway Line 5 Closure Details

The core of the issue stems from an unintended interaction involving the "The Lone Gunman" buff. In Limbus Company, developed by Project Moon, this specific buff is designed to increase the minimum and maximum speed values for the number one deployed identity, while simultaneously replacing a skill one with a skill three. However, following the March 12, 2026, update, this effect began applying to all identities on the field rather than the single intended unit. This deviation from the intended mechanics has forced the development team to suspend access to the content while they rectify the logic error.

For players tracking the status of their progression, Project Moon has indicated that they will be reverting certain clear records that were affected by this bug. This measure is intended to maintain a fair environment for all strategy game enthusiasts who participate in the challenging content offered by the Refraction Railway. The team at In Game News is monitoring the situation closely as more information becomes available regarding the return of this mode.

Technical Causes Behind the Project Moon Limbus Company Bug Fix Announcement 2026

The technical origin of this error lies in a broader effort to resolve issues regarding skill reserves. Previously, certain buffs that modified the number of skill copies available to an identity were calculated based on the order of skills owned by the identity rather than the rank of the skill itself. This older logic often caused skills that should have been unavailable—showing zero copies—to appear in the user interface with a non-zero count.

The March 12, 2026, update was intended to shift this calculation to a rank-based system to fix the display and functionality of four specific buffs: "Training Team Captain," "Ready to Fire," "Welfare Team Captain," and "The Lone Gunman." While the transition to a rank-based system successfully addressed the skill reserve display issues, it introduced the secondary error where the deployment order-checking logic for "The Lone Gunman" was inadvertently omitted. This resulted in the buff applying globally across the entire squad.

Internal Communication and QA Oversights

In their official communication, Project Moon addressed two specific internal failures that contributed to the deployment of this bug. First, the team acknowledged an omission from the "Bug Fixes & Improvements" list provided to players. Due to a misstep in the announcement specification process, the specific update details regarding the skill reserve changes were not included in the patch notes. Consequently, this lack of documentation led to a failure in the standard quality assurance (QA) workflow.

Second, the developers admitted to a failure in cross-verification. During the development process, the team failed to notice that the logic responsible for checking the deployment order had been removed during the implementation of the rank-based fix. The team mistakenly concluded that the buff was functioning as intended before pushing the update to the live servers on PC, iOS, and Android. For more information on how these patches are managed, you can view our update coverage.

Impacted Buff Effects

The following table outlines the buffs that were subject to the logic changes in the recent update:

Future Measures and Current Status

Project Moon has apologized for the inconvenience caused to managers and confirmed that they are working on a fix to restore the correct application scope for "The Lone Gunman." The temporary closure of Refraction Railway Line 5 is a precautionary measure to prevent further exploitation of the bug and to ensure that the eventual fix can be integrated cleanly. Players should look for further announcements from the official Project Moon channels regarding the exact timing of the reopening.

This incident highlights the complexities involved in maintaining a live-service RPG where minor changes to underlying logic—such as shifting from an order-based check to a rank-based check—can have cascading effects on specific character buffs. As Limbus Company continues to evolve, the ability of the development team to identify and isolate these issues remains a key factor in the stability of the player experience.

Frequently Asked Questions

Why is Limbus Company Refraction Railway Line 5 temporarily closed?
Refraction Railway Line 5 is temporarily closed to address a bug where the 'The Lone Gunman' buff was incorrectly applying its effects to all allies instead of only the first deployed identity.

What is the Lone Gunman buff issue in Limbus Company?
The issue caused 'The Lone Gunman' buff to apply to every identity in a squad rather than just the number one deployed identity following the March 12, 2026 update.

When will the Limbus Company Refraction Railway Line 5 update be resolved?
Project Moon has announced they are working on a fix to correct the buff application logic and will provide further updates regarding the reopening of the mode.