There's a Magisk module called "Bluetooth library patcher" that will fix your bluetooth issue. Sadly I forgot to include this in the latest update.Thank you very much for this awesome rom ! I've been using the last version for a couple of days, it seems pretty stable. No real lags (I think korea rom was a bit smoother but hey), gps and stuff work good.
Only thing I encountered is with the Bluetooth, I connected some speakers but the phone seems to forget it everytime I try to reconnect (I need to pair it manually and the speaker doesn't show up in the saved list).
Again good job