JBlockGlitch

Minecraft 版本： 26.1 26.1.1 26.1.2 26.2

平台： paper purpur

标签： game-mechanics management utility

JBlockGlitch

JBlockGlitch is a lightweight Paper plugin that prevents players
from creating ghost blocks and from block glitching in protected
regions.

Download: https://modrinth.com/plugin/jblockglitch

Contribute: https://github.com/jruk8/JBlockGlitch

Requirements

• Paper 26.x (tested on 26.2+)
• Java 25

Purpose

The plugin contains two independent detection systems: protected-block
glitch prevention and vanilla ghost item prevention. Pairing these two
systems helps prevent common block glitching techniques on modern Paper
servers.

Both systems can be independently enabled or disabled and configured
according to the server's performance and detection requirements.

Protected-block glitch prevention

When a protection plugin rejects a block placement, such as WorldGuard or
GriefPrevention, JBlockGlitch resends the real block state to the player and
prevents movement through the client-side ghost block.

The plugin supports both normal block placements and bucket-based placements,
including water, lava, and powder snow. Bucket protection uses multiple event
paths to support protection plugins that handle bucket interactions differently.

Two detection modes are available:

• medium rubberbands the player to their previous position when a denied
  placement is detected.
• strict uses additional movement and position detection to prevent the
  player from standing inside or moving through a denied block.

Vanilla ghost item and ghost block prevention

JBlockGlitch detects common vanilla ghost item creation techniques, such as
inventory manipulation involving F+Q, hotbar switching, dropping items, and
block placement.

Three detection modes are available:

• medium detects common ghost item manipulation patterns.
• hard additionally monitors inventory manipulation events, including
  creative-mode inventory interactions.
• brute-force continuously resynchronizes player inventories.

JBlockGlitch can also periodically resynchronize the blocks immediately
surrounding each player. This helps correct client-side ghost blocks created
through client modifications that never result in a server-side block
placement event.

The block resynchronization checks an 18-block area around the player,
covering a 3×3×2 region containing the player's feet and head space. The
interval is configurable and can be disabled independently.

Demos

Plugin configured to medium detection mode. Tests done with autoclicker at 100 CPS.

Protected Region

Without the plugin

This 10-second demonstration shows the block-placement glitch before
JBlockGlitch is installed.

With the plugin

This 10-second demonstration shows the same placement attempt with
JBlockGlitch installed.

Vanilla Ghost Item

Without the plugin

This 10-second demonstration shows ghost item generation before
JBlockGlitch is installed.

With the plugin

This 10-second demonstration shows the ghost item generation
failing after JBlockGlitch is installed.

Commands

The help message is configured in messages.yml as a multiline list. Messages
use MiniMessage formatting by default. Set text-format: legacy in
config.yml to use legacy & color codes instead.

Config.yml provides independent options for protected-block detection,
ghost-item detection, and nearby ghost-block resynchronization.

If issues occur, regenerate all configuration files and download the latest
version. If the issue persists, report it to the issue tracker.

See CONTRIBUTING.md for build instructions and contributor
setup.

© 2026 jruk8. Licensed under GNU GPLv3.