I appear to be having a similar issue in the following versions:
Chromium 56.0.2924.76 built on Debian 9.0, running on Debian 9.0
Chromium 57.0.2987.98 built on Debian 9.0, running on Debian 9.0
But it seems to be okay in this version:
Chromium 56.0.2924.76 Built on 8.7, running on Debian 8.7
The chromecast device has additionally been confirmed to work okay with Chrome on Windows and various apps on Android.
I appear to be having a similar issue in the following versions:
Chromium 56.0.2924.76 built on Debian 9.0, running on Debian 9.0
Chromium 57.0.2987.98 built on Debian 9.0, running on Debian 9.0
But it seems to be okay in this version:
Chromium 56.0.2924.76 Built on 8.7, running on Debian 8.7
The chromecast device has additionally been confirmed to work okay with Chrome on Windows and various apps on Android.