Try this minimize, click small circular button just above 'Now Playing' to hide menu bar, position window, and drag BRHC to size req and then maximise.
Hope this helps,I've just tried it myself and it works OK for me, Toxin.
Amazon Prime Day 2018: Best Deals & Launches
42 Tips for How to Make Digital Artworks That Look Hand-made
The best Amazon Prime Day Apple deals 2018
Les meilleures séries Amazon Prime Video (2018)