Problem with Anti-detect Browsers

Hello , I have tried the most popular anti-detect browsers and recently I noticed something. When I have a profile open sometimes randomly the casting icon appears and it shows something like VLC Airplus2k Casting and then there is a button to stop casting. All my TVs are turned off and I definitely do not want to cast my session. I am not on a public network either.
So basically something or someone is enabling the Chromecast feature and I was wondering if this is normal and to what purpose ? Are these companies spying on us casting our activity to some TV / server to keep logs of what we do ?
What is going on ?
NOTE : The probability of my computer being infected is zero. I did this on multiple device with fresh OS installs

It's possible that the browser or related plugins you're using are triggering an error under certain conditions, causing the Chromecast option to be displayed incorrectly. Alternatively, it might be that you are using Wi-Fi and someone else who shares your network has also set up Chromecast, leading to it being detected mistakenly.