When browsing using a Windows 10 computer with the Core on the Antipodes K50, I just noticed that for Album pages, the window background color depends on the Genre. It seems that all Genres are displayed with the normal white background while the Classical Genre is displayed with a greyish background.
When doing the same on the iPad (also latest software version), Albums with the Classical genre display as normal, with a white window background.
Seems like an odd bug. Since I don’t often play Classical music, it’s possible that this has started prior to the current version or even prior to 1.8.