Hello Roblox players and developers,
Recently, many users have reported seeing a strange message appear on their screens while playing Roblox:
This unexpected issue seems to be linked to an internal Roblox debugging flag called **VisBugMeshLock**. It is affecting the **Shift Lock** camera functionality, forcing it on even in games where it should be disabled.VisBugMeshLock = true (C++)
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VisBugMeshLock appears to be a developer flag used by Roblox internally. While its exact purpose is unclear, it is believed to be related to debugging mesh rendering and collision behavior. However, for some users, it has **unexpectedly enabled Shift Lock mode**, making camera movement feel different and unresponsive.
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If your camera is behaving strangely or you see the "VisBugMeshLock = true" message on your screen, try the following:
- Open the in-game settings (press Esc).
- Navigate to the **Camera Mode** section.
- If "Shift Lock" is enabled but greyed out (meaning you cannot disable it), you might be affected by this bug.
- Try joining a different game to see if the issue persists.
Here are some possible solutions that have worked for different users:
1. Restart Your Game and Roblox Client
- Simply close Roblox completely and restart it.
- Try launching a different game first, then go back to the affected game.
- If the issue was temporary, it might disappear after a few restarts.
- Fully uninstall Roblox from your computer.
- Download the latest version from Roblox's official website.
- Install it again and check if the issue persists.
- Close Roblox.
- Press Win + R, type `%localappdata%`, and press Enter.
- Navigate to the Roblox folder and delete everything inside it.
- Restart Roblox and check if the issue is resolved.
- Download an older version of Roblox from trusted sources (be cautious!).
- Block automatic updates temporarily.
- Check if the older version works without the bug.
- If none of the above solutions work, report the issue to Roblox support: https://en.help.roblox.com/hc/en-us.
- Explain your problem clearly and mention that the "VisBugMeshLock" flag is affecting your gameplay.
There are active discussions about this issue on the Roblox Developer Forum. Check these links for the latest updates: Some users report that Roblox might release a fix soon, so stay updated!
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While this issue is frustrating, it is likely caused by an accidental debug flag activation in a recent update. Hopefully, Roblox will fix it soon. In the meantime, try the solutions above and share any new fixes you discover!
If you have any other solutions or insights, feel free to reply to this post and help the community.
Stay safe and happy gaming!