there's a bit but as you can use the vcas on the mono channels it only really affects the stereo channels - & at least for me it's only really present on the returns - so you could just turn the sends down before muting...

-- JimHowell1970

And it's not like consoles are always going to work perfectly anyway. Back in the early 1990s and before, channel leakage is something that you had to watch out for, and it wasn't "NO leakage" back then, but "manageable leakage". I recall reviewing a Studiomaster Diamond 163 back in 1997 that had some very obvious leakage on high-level signals, and that was the sole flaw...otherwise, it was a killer little live desk.