The Iris ProjectTIP
The Iris Project•2mo ago•
1 reply
Sudark

Crash when dragging cursor + holding Ctrl with Iris + Sodium + Flashback

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:
[Render thread/ERROR]: Missing program minecraft:entity_outline/0 in override list. This is likely an Iris bug!!!
[Render thread/ERROR]: Missing program minecraft:entity_outline/1 in override list. This is likely an Iris bug!!!
[Render thread/ERROR]: Missing program minecraft:entity_outline/2 in override list. This is likely an Iris bug!!!
[Render thread/ERROR]: Missing program minecraft:entity_outline/3 in override list. This is likely an Iris bug!!!
[Render thread/ERROR]: Missing program minecraft:pipeline/outline_no_cull in override list. This is likely an Iris bug!!!



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
image.png
2025-12-07-2.log60.34KB
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