There is a bug on the iOS versions whereby if you minimise the Plex app for some time then ‘open’ it again, the Live TV cursor doesn’t go to NOW, it seems to go to some random time in the future. I’m running my clients on UTC, so have no idea why this is a problem.
In Xcode/swift, you can check when an app has been minimised/maximised, so then would be a good time to set the live TV cursor to Now.