Well I use them all of the time, for WORKING on the mix, and listening to the channels independently, but never at mixdown.
Do you do a lot of group solo for post stuff? I use Nuendo mostly for music and find no use for mute or solo during mixdown. I always mute events if I am not going to be needing that part in the arrangement. Muting events is much more straight forward because you know exactly what you are hearing just by looking at the events on the project page. It's also harder to accidentally undo. (Once again, I'm not telling anyone how to work, just sharing my workflow to try to figure out what makes this bug so bad for some, and not so bad for others.)
I'm probably not as frustrated because I have not been using Nuendo since forever. For the way I work, I never experience problems. I solo ALL of the time, way more than I mute, surely hundreds of times a day. N4 always solos correctly, except for the occasional fx bus not being heard.
You guys have apparently waited for years for this to be fixed. Why sweat it now when it has been confirmed to have been fixed in the next maintenance update due in a month?
I agree it's total BS that it has taken this long, but if you are still using the product after it being broken for this long, there's really no room for complaining IMO. I mean, the problem obviously was not compelling enough to cause you to find a better solution. Compared to how long you have already waited, the fix is literally just around the corner.
No disrespect, but to me, having switched from crApple ilLogic 8, Nuendo is such a breath of fresh air that I guess I haven't started hating it... yet...