This is the same issue I'm having. I already wasted 3 days on it and nothing I tried works

I can't find the linked bug report

@JoeKun Will you guys ever address the feedback in this thread? Even in the new API for iOS 15.0+ it is still not possible to detect when queue ends playing. It shouldn't be that hard to just provide us some delegate callback or use Combine to publish this one event and our lives would be much easier for it and it wouldn't break anything in your own apps and integrations (as lame as that excuse is)

I tested it again and you’re right, same errors are visible in SwiftUI

So is the current behaviour correct? This seems like a very strict limitation. We can refresh Widgets when app is in background, why not Live Activities?