Crash when dragging cursor + holding Ctrl with Iris + Sodium + Flashback
crashbug
Minecraft client crashes whenever I drag the mouse cursor while holding Ctrl.
This happens whether shaders are enabled or disabled.
The log always shows the following Iris errors right before the crash:
Steps to reproduce
Start the game with Iris, Sodium and Flashback installed.
Join any replay.
Move/drag the mouse cursor.
While dragging, hold Ctrl.
The game crashes to desktop.
Expected behavior
No crash when holding Ctrl while moving the cursor.
Actual behavior
Game crashes, with the above “Missing program … outline / outline_no_cull” errors in the log.
Environment
Minecraft: 1.21.8
Fabric Loader: 0.17.3
Fabric API: 0.136.1+1.21.8
Iris: 1.9.6+mc1.21.8
Sodium: 0.7.3+mc1.21.8
Flashback: 0.38.2
GPU: AMD Radeon 780M
OS: Win 11
Full log uploaded too
This happens whether shaders are enabled or disabled.
The log always shows the following Iris errors right before the crash:
Steps to reproduce
Start the game with Iris, Sodium and Flashback installed.
Join any replay.
Move/drag the mouse cursor.
While dragging, hold Ctrl.
The game crashes to desktop.
Expected behavior
No crash when holding Ctrl while moving the cursor.
Actual behavior
Game crashes, with the above “Missing program … outline / outline_no_cull” errors in the log.
Environment
Minecraft: 1.21.8
Fabric Loader: 0.17.3
Fabric API: 0.136.1+1.21.8
Iris: 1.9.6+mc1.21.8
Sodium: 0.7.3+mc1.21.8
Flashback: 0.38.2
GPU: AMD Radeon 780M
OS: Win 11
Full log uploaded too
2025-12-07-2.log60.34KB
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