Ask HN: Whose Fault, Apple or Spotify?

I got an email saying the following but it struck me as strange that Spotify is blaming Apple for breaking their app with an OS update. Here’s what Spotify sent:

> Apple WatchOS 9 introduces a bug that will cause Spotify streaming on the Apple Watch to stop working. We encourage Spotify Apple Watch users to not install the WatchOS 9 update until Apple implements a fix. Users already affected can instead download their content to their Apple Watch and listen offline or stream from their phones.