Building Timeline message remains for several minutes after fresh install

[stodge]

I installed a fresh copy of the latest version of Immich using docker-compose. I installed the iOS app on my phone and connected it to the server. The "Building Timeline" message appeared and the docker-compose logs shows websocket connections and disconnections about every 20-30s. After about 10 minutes of watching the "Building Timeline" message, I logged into the server using a browser and uploaded a single image. The iOS app immediately refreshed and showed the image and removed the "Building Timeline" message. I'm not sure if this is expected or if something weird is going on with my installation and/or network.