I enable the pictures in picture options in special app access but it's not working ... I play video in youtube and then press home button ... And then my YouTube app in background app its never goes in picture-in-picture mode....
Can you fix this??
Google have chosen to deliberately block Oreo PiP for YouTube, with the exception of people who have paid YouTube services (not available to the majority of the global market, only US and 4 other countries). Complain to Google about that. Other apps need to implement support for it, so ask the developers of particular apps to do that.
Nokia / HMD can't do anything to improve availability of PiP, as they have no control over it.