Didn't know this yet, but the "Main Out -12 dB" pad option in the Output Section is stored in output presets. I almost blew my ears out wearing headphones (plugged into Scarlett 2i4) and recalling an output preset where it was unticked and the volume suddenly boosted by 12 dB!
This is a bit contradictory with: the fact that output volumes are (intentionally) not stored in output presets.
We have decided not store volume values to avoid large and dangerous jumps in volume.
There is a standard workaround for sure: keep the volumes at constant values and adapt the correct levels on the receiving devices (mix desks, monitors)
Is this a bug?