Mixin not working when in distribution environment [1.20.1]

I have made a mixin for the BlockEntity class for the purposes of the mod and it works just fine in the dev environment. However when i build the mod it stops working. I think it is important to mention that i a have a lot of other mixins that do in fact work in the distribution. Here is the problematic mixin:

@Mixin(BlockEntity.class)
public abstract class BlockEntityMixin implements IBlockEntity {
    @Shadow BlockEntityType<?> type;
    @Nullable
    BlockEntityType<?> overridenType;

    @Override
    public void setType(BlockEntityType<?> type) {
        this.overridenType = type;
    }

    public BlockEntityType<?> getType() {
        return overridenType == null ? this.type : this.overridenType;
    }
}