Hey! First off, let's clarify some terminology. The feature you are presumably talking about is called Picture in Picture, not to be confused with Orion's Preview window feature.
I tried reproducing the bug you are talking about (macOS media control keys F7, F8, and F9 for previous track, play/pause, and next track, respectively, not working when the video is playing in a PiP window). Based on my testing on 135-beta, the keys worked as expected even when the video was playing in a PiP window and some other tab was active.
Could you share some further information about the issue?
- A video of you reproducing the issue would be great
- Do you have any extensions installed?
- Does the issue persist on a fresh Orion profile (File → Profiles → New Profile)?
