[PC][Classic] Frostfall exposure meter not properly filling

So, the exposure meter in Frostfall works mostly fine for me. Everything displays correctly when it is cold, but for warmth I don't get the solid red bar filling up the exposure meter, just the white line moving. I'm not sure what the cause here is and I'm hoping someone here might have an idea of what I can adjust to fix this. Thanks.

Screenshot of the issue

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