Hi, I'm having a similar issue. I was able to play videos on my Sony android TV before the latest update but now it only let's me display my phone screen on the TV and I cant stream the content and use the phone at the same time. Also playing videos from Samsung internet app gave u a choice to either mirror the screen or cast the videos but now it only gives option to mirror only. I'm a convert from apple where playing a video via apple TV still let's you use the phone as usual without interrupting the video playback on the TV.
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