Says the official support channels, which you should be checking for information anyway, unless your only intention is to scream your frustration into the void. If that’s the case, best of luck on that resolving anything.

ETA: like I said, it’s a closed beta, so not something you can install. And it won’t be a pull request because this fix won’t require an update to Lidarr, it’ll just start working again when the new server is done.