Disabling "Colored Shadows" ("SHADOW_COLORS=" in .zip.txt file) in the shader pack's lighting settings will introduce strange outlines and blurry textures, strange lines in the ui, and messed up clouds.

Fix (partial) = Re-enabling "Colored Shadows" and restarting Minecraft

Other mods/resource packs
- modpack Fabulously Optimized 4.9.4 for 1.19.4 -> https://modrinth.com/modpack/fabulously-optimized/version/4.9.4
- xali's enhanced vanilla, xali's bushy leaves -> https://legacy.curseforge.com/members/xalixilax/projects
(deselecting/reselecting xali's resource packs didn't seem to change anything, better or worse)
other mods/resource packs appear to be irrelevant, Problem still persists even with only Fabric, Sodium, Iris Shaders, and BSL Shaders.

These last four screenshots are after I re-enabled "Colored Shadows" and restarted Minecraft. It's mostly normal, except the item I'm holding becomes blurry depending on world position and the angle i'm facing (?)
Edit: blurry item persists even after deleting/reinstalling Fabulously Optimized and BSL Shaders

latest.log

Problem still persists even with only Fabric, Sodium, Iris Shaders, and BSL Shaders.

Problem still persist after I clean installed Minecraft, removing all mods and resource packs, and only installing Fabric Loader, Sodium, Iris Shaders, and BSL Shaders. Then installed optifine, no problems with bsl on optifine

The BSL version you are using is incredibly old. Maybe try updating the shader version with the latest off of modrinth?