Hello! I can clarify this for the Mod Fixer mod:
While most third-party mods should continue working alongside supported mods in Patch 7, the ModFixer mod created by figs999 will no longer be compatible with the in-game Mod Manager, as we have fixed what Mod Fixer was… well, fixing.
This means that mods that use or include the Mod Fixer .pak file (ForceRecompile.txt) will no longer be required to force the story to recompile. While we do recommend that mods that include the Mod Fixer .pak file remove it, to save you the worry of a broken game with third-party mods, we have blocked his particular file from being loaded in Patch 7.
This means that your mods should work correctly, but this specific file will be blocked and will not load (and cause issues!). This is why ModFixer might not be showing up on your list.
(If you’re still running into some issues and use BG3MM, you can check whether the third-party mods you’re using have the file baked in by looking out for an icon in the line next to the mod name. When hovering over this icon, it will say “Has Mod Fixer.”)