[MOUSE WITHOUT BORDERS] keyboard sync bug

Microsoft PowerToys version

0.100.0

Installation method

Microsoft Store

Area(s) with issue?

Mouse Without Borders

Steps to reproduce

-Steps to reproduce:

• Connect the laptop and desktop PC via Mouse Without Borders (using Service Mode).
• Move the mouse cursor from the laptop to the desktop PC.
• Type using the laptop's keyboard on the desktop PC (works fine at first).
• Wait a few minutes (or perform some basic tasks).
• Attempt to type on the desktop PC using the laptop's keyboard again. The cursor moves and clicks, but keyboard inputs are completely ignored.
• Troubleshooting steps already attempted
• Administrator Rights: PowerToys is running as Administrator on both machines.
• Service Mode: "Use Service" is enabled on both systems.
• Network Profile: Both computers are set to a "Private Network" profile on the same local subnet.
• Clipboard Sharing: Tested with "Share Clipboard" disabled, but the issue persists.
• Service Restart: Restarting the Mouse Without Borders service temporarily restores keyboard functionality, but it drops again after a few minutes.
• Connection Reversal: Attempted to reverse the connection handshake (generating the security key on the laptop instead of the desktop), but the keyboard drop behavior remains the same.

✔️ Expected Behavior

No response

❌ Actual Behavior

Description of the bug
I am using Mouse Without Borders via PowerToys to share my mouse and keyboard between a laptop and a desktop PC. While the mouse cursor transitions and clicks perfectly in both directions, the laptop's keyboard stops registering any input on the desktop PC after a few minutes of use. Interestingly, the desktop PC's keyboard can still write on the laptop without any issues (one-way functionality). The laptop keyboard works initially after restarting the service, but consistently drops after a short period.

Upload Bug Report ZIP-file

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Additional Information

OS: Windows 11 (on both machines)

Other Software

No response

Start by reproducing the issue in Mouse Without Borders with Service Mode enabled on two Windows 11 machines, following the listed laptop-to-desktop keyboard steps and the service restart comparison. Done means keyboard input remains functional in that direction after several minutes while mouse movement and clicks continue to work.