When you bring the filter's envelope parameter to zero, and then attempt to slowly mouse upward to bring the value back to 100%, it gets "stuck", it only seems to change when you mouse upward quickly -- but it doesn't have that problem when you mouse downward slowly.
Hopefully that makes sense.
Anyone else?
Any beta-testers care to try it on the latest and greatest version of Live? I haven't had a chance to do any beta testing. I'm too busy.