Subtitles vanish in PiP mode..

I am a subscriber to your Infuse 6 Pro in iPad Pro 2020. I like that the app can handle 2K videos and of course the picture-in-picture feature! I have a couple of suggestions/requests, hoping you will take it in consideration.
1st Make picture-in-picture automatic when I am switching to other apps on my iPad
2nd Subtitles don’t show on video when Picture-in-picture is activated. I would like to have them.
3rd Rewind or Forward button on PiP mode will be also useful
Thank you in advance
C. H.