Also I'd like to notice that "filter bar" on the subscriptions panel (swipe left from home) has no shadows and so does everything on the search tab. I think it would be nice to have cause it would make everything more "readable" :))
Thanks for reporting this issue. I can see the problem however I don't think shadows is the correct solution here since the search bar is not meant to be on a separate plane from the UI. It's just bad UI because the search bar color has very poor contrast with the background. Will resolve.