Minecraft Version: 1.19.3
ChunkFadeIn Version: v2.0.8-1.19.3
Iris Shader Version: 1.5.2
Shaderpack: KappaRT P16b

Here is the log and the crash report.
latest.log
crash-2023-02-08_19.30.19-client.txt

Fixed in 0cd0ae4, after some time I'll also port these changes to other branches.
Also note that there can be some visual glitches with fading in some shaders, but animation works fine