I originally posted this in the Roku forum, but then discovered it’s a cross-platform (i.e., server) issue. Here’s what’s happening.
I’m running PMS on a Windows 10 machine. Serving to a Roku 2 device, various Windows 10 coputers, iPhone, and Samsung Android phone. On my Roku 2 box and my wife’s iPhone (but not on web client or Android device), thumbnails for certain photo albums keep disappearing. This happens only with those thumbnails I’ve manually selected for a folder, not with those automatically generated by Plex. I’ve done the normal update/analyze from the server, but has no effect. Also changed to the Plex Pass app on the Roku, exact same issue with exact same folders. Very, very frustrating that something that worked just fine for months and months is now broken.
Like I said, the problem is on the Roku 2 and iOS app. NOT on the web client, Windows 10 desktop app, or Android app. Ideas, anyone?