Same issue. This is causing Plex to cast via screen mirroring instead of directly (Not getting the “Ready to Cast” screen on my TV anymore).
- Plex Server Version: 1.14.1.5488
- Chromecast Versions: 1.32.141268 and 1.36.141427
- Chrome Version: 72.0.3626.81 (Official Build) (64-bit)
Edit: this may be the same issue and certainly seems something has changed in the Chrome Version 72 update: [Cast] API is not available in Chrome 72