[1.21.1] Only spawn chunks render; cannot interact or use commands after world load (VulkanMod 5.5.0）

[akkk114514]

Describe the bug

Environment

• Minecraft: 1.21.1
• Fabric-Loader: 0.17.2
• Fabric-API: 0.116.7+1.21.1
• VulkanMod: 5.5.0
• Other mods: mrcaryfish's furniture mod refurbished supplementaries let's do:bakery handcrafted farmer's delight refabricated kaleidoscope cookery
• VulkanMod (issue still appears with only Fabric-API)
• GPU: Intel uhd graphic （10gen Comet Lake）
• Driver: 27.20.100.9664
• OS: Windows 10 22H2

Problem Summary

After updating to VulkanMod 5.5.0 for MC 1.21.1, any single-player world stops rendering chunks beyond the spawn area.

• Only the initial 3×3 chunks around the player are visible; everything else is empty air.
• Right-clicking blocks (beds, pressure plates, modded furniture) or entities does nothing—server-side seems to ignore the interaction.
• Commands (e.g. /tp, /gamemode) are not recognized; no feedback in chat.
• Game does not crash, but the window hangs on "Saving world" when trying to quit, forcing manual kill.

Steps to Reproduce

1. Install Fabric-Loader 0.17.2 + Fabric-API 0.116.7
2. Drop VulkanMod-5.5.0.jar and its LWJGL natives into mods.
3. Launch MC, create/enter any single-player world (new or existing).
4. Walk or fly 50 blocks away from spawn → new chunks never appear.
5. Attempt to sleep in a bed or use any right-click action → no response.
6. Type /tp 100 70 100 → command is ignored.
7. Try to exit world → stuck on "Saving world" forever.

Additional Notes

• Removing VulkanMod and re-launching with the same world immediately fixes all symptoms (chunks load, interaction works, commands respond).
• Re-adding VulkanMod 5.5.0 makes the issue return 100 % of the time, even on a brand-new world.
• Sodium or other rendering mods are not installed during testing.

Thanks!

20251211-5(1).json
20251212-4.json
20251211-5.json

Steps to reproduce

To Reproduce (100 % minimal steps)

1. Start from a clean slate

   • Delete the folders .minecraft/config and .minecraft/mods (back them up first if needed).

2. Create a fresh instance

   • In MultiMC / Prism / the official launcher, make a new “Fabric 1.21.1” instance.
   • Install Fabric-Loader 0.16.10, launch once, then close so the game files are generated.

3. Add only the required files

   • Drop fabric-api-0.115.4+1.21.1.jar into mods.
   • Drop VulkanMod-5.5.0.jar and its three bundled lwjgl-vulkan-*.jar libraries into mods.

   (Ensure these 5 jars are the only files in the folder.)

4. Launch the game

   • Keep JVM args default (only -Xmx4G).
   • From the main menu: Singleplayer → Create New World → leave everything default (Survival, Bonus Chest ON) → Create.

5. Test immediately after spawning

   • Stay at spawn, note the chunk coordinates with F3.
   • Walk 60 blocks in any direction (≈ 4 chunks); new chunks remain empty air.
   • Place a bed on the ground → right-click it → no GUI appears.
   • Open chat, type /tp 100 ~ 100 → press Enter → no response.

6. Try to quit

   • Esc → Save and Quit → progress bar hangs on “Saving world” forever; must kill the process manually.

7. Control check

   • Close the game, delete VulkanMod-5.5.0.jar and its lwjgl jars (leave only Fabric-API).
   • Repeat steps 4–6: chunks load fine, bed works, commands execute, world quits normally.

Log files

20251211-5(1).json
20251212-4.json
20251211-5.json

[JJ10-GNU]

@akkk114514 Does it happen on the latest vulkanmod version?