Overall I am really happy with my OnePlus 6T but one thing is driving me crazy.
I am using Bluetooth earbuds quite a lot ( Samsung Galaxy Buds and RHA 750i wireless). Every time I disconnect the headphones from the phone my media volume jumps to 100 percent by its own even tho it was set to 40 percent before connecting the Headphones.
I tried already disabling Bluetooth absolute Volume controls (In developer settings) but the behavior didn't change. So the out coming situation is always that I use my headphones for music, I disconnect them and the next time I want to view content with Sound I get almost a heart attack as the volume for speaker is set to 100 percent.