I cast to my TV from my Chromebook (so the browser is always up to date.
I am commonly casting Sky News from Youtube or something from BBC iPlayer. Sometimes the Cast button just disappears. Sometimes if I go to Google Home on my Android phone and cast screen then stop casting the cast button will reappear in the Chrome Webpage.Sometimes it doesn't! Sometimes I get the option to play on computer or play on TV. Ticking the preferred option does nothing. The only reliable way to untangle the mess is to reboot the Chromebook.
I have a rock steady home network so that is not the issue.
Until about two years ago it all worked just as it ought - not not now.
Hey there Labarum,
I apologize about the late response, thank you for being patient! Were you able to fix that casting issue? If not, I'd be happy to help out, as this issue does sound pretty tricky. When this issue occurs, what color is the LED light on the Chromecast? This could point to some errors if the Chromecast is throwing one. Then, just to be safe, I would make sure the Google Home app is up-to-date, then I would clear out the cached app data as well.
I look forward to your response, and if you have any other questions or concerns for me, please let me know!