Received an update last night with some minor fixes and improvements. However, I noticed in the changelog a line regarding Bluetooth improvements.
Jumped in the car this morning, and my phone instantly synced and Spotify worked FIRST TIME! including all metdata and previous/next skipping.
Well done and congratulations to the oneplus team. Hopefully they share the code with the pixel team at google!
Yep, looks like Bluetooth on Oreo is FINALLY fixed! Whoop