Cubes Without Borders — Minecraft Java Edition 26.1+

Vanilla exclusive fullscreen mode in Minecraft has a serious drawback — the game automatically minimizes when the player switches to another window or clicks the mouse on a second monitor. The Cubes Without Borders modification solves this problem by replacing the standard fullscreen mode with a borderless fullscreen window. This lets players keep the game open while interacting with other applications on another monitor or directly on top of the game, without minimizing the client itself. This mod overview reveals how the project completely does away with exclusive mode and minimizes input lag. If you need to keep an eye on a stream chat or work in a browser at the same time, it is worth downloading the Cubes Without Borders mod.

Core mechanics and activation

After the mod is installed, the vanilla Exclusive Fullscreen button disappears from the graphics settings menu. In its place, a new Borderless option is added to the standard toggle. If the build includes the optimization mod Sodium, this option is integrated directly into its own video settings menu.

In addition to the in-game settings, the mod adds a new launch argument --borderless. You can specify it in the launcher parameters to force the game to start in a borderless window regardless of the current graphics settings. The modification changes the startup sequence — the window immediately opens in full screen, without an intermediate small window being displayed. The screen recording program OBS also natively recognizes this mode through the Game Capture feature.

The Borderless mode toggle in the standard video settings

Working with multiple monitors and overlays

The modification automatically remembers the monitor on which the player last launched the game. If you always play on the second display, you will no longer have to drag the window there every time after launch, since the game automatically chooses the correct screen.

Borderless mode correctly supports displaying system overlays on top of the game. Elements such as the Xbox Game Bar on Windows or pinned windows from other programs (for example, the Picture-in-Picture feature from a browser) are rendered without artifacts.

A browser displayed in Picture-in-Picture mode on top of the Minecraft window

Configuration (Config)

minecraft:hybrid

The YetAnotherConfigLib settings menu with window behavior parameters

Edge cases and troubleshooting

A game crash caused by this modification happens extremely rarely, but players may encounter specific operating system bugs. For example, Windows users often ran into a screen flickering problem on focus loss, which the developer fixes by setting the windows:windowed display method as the default borderless window mode.

For players on macOS 10.15 (Catalina) and older versions, a system bug has been fixed that caused the game to automatically minimize when switching to full screen. The display of the translucent Liquid Glass frame on macOS 26 (Tahoe) and newer has also been eliminated. By downloading these technical mods for Minecraft 26.1+, users get stable rendering — switching to borderless mode no longer breaks shader rendering in combination with the Distant Horizons modification.

Conclusion

Cubes Without Borders is a reliable technical tool for ensuring comfortable multitasking during gameplay. It completely solves the problem of the game being forcibly minimized. Unlike its similar counterpart Borderless Mining, this mod provides flexible settings and explicitly supports all major platforms (Linux, macOS, Windows) without introducing additional input lag. The project is perfect for streamers, players with multiple monitors and users who regularly interact with third-party programs without stepping away from the gameplay.