Mobile DOM Optimization Issue

I want to use Mobile DOM Optimization because it really improves performance. However, when I activate it, the header disappears on desktop, and even if I create a separate cache for mobile devices, I can’t overcome this issue. I see that others are also experiencing this problem. What do we need to do to fix it so that we can use it? Do you have any workarounds or patches because it’s a really good feature for speed but we can’t use it. Thanks.