Having LuminousWool in a private pack breaks lang somehow so things that use it arent shown in the console the way theyre supposed to. For example during thw world loads the progress isnt shown properly.

The top pic is how it behaves and the bottom pic is how its supposed to.

Edit: Using Luminous Wool 1.1.1

I think the issue was for some reason I had two lang files in the project. I've updated the mod to 1.2.0 so hopefully that will fix this issue. I'll leave this issue open until that's confirmed.