I've had this bug for years now. It seems to be absolutely random and it comes and goes. Basically anytime I try to change values using click and drag in the control bar/display it won't work. Meaning I have to manually enter the bpm, varispeed deviation, playhead position, etc. My click and drag is workin just fine for everything in the inspector/mixer view though. What's extra strange is that when I'm in quick sampler I get the same behavior that I do in the control bar/display. I can't click and drag the fade/start/end markers or their respective values but I can use the "scroll wheel" to do so. All of the other values like pan, volume, etc. I'm able to change as normal. No other plugins have this problem afaik. It's the same behavior with magic mouse and trackpad. I'm sure it's not the OS cause as I said it's been happening for a LONG time now through many different OS/Logic versions. Maybe there's a setting somewhere that keeps magically changing itself? Any help would be great appreciated