Yes, this is exactly what I expected would be the case when I commented on the problem in another thread.
However, this is not the intuitively expected behaviour. It would be expected that the total output volume would remain constant throughout the range of the mix control – exactly as I expect it is with effects such as delay or reverb. Presumably the mix controls are programmed to manage this on individual algorithms so the same should be done for the programme mix.
I haven’t tested it extensively as I have only had my H90 for a few days, but I have a feeling that there is also an issue with the individual effect mix levels that is similar.
There are a number of customers who are complaining about volume levels and I think that this is the source of the issue.