I use a MOTU audio express set up in Sonar with 3 outputs: Main, Analog, and Phones.
 
Today when I linked the Phones faders together and moved them, the Analog faders moved simultaneously. This should not happen.
 
When I unlinked the Phones faders and moved the right fader the left one was still linked.
 
After clicking the link buttons several times things finally returned to normal.
 
I've used X1 since it first came out but this is a brand new bug for me. There must be nanobots lurking about.
 
Side note: This forum software thinks the word "fader" is misspelled.
 
Steve

I have no idea but you should check that the moto audio express firmware and drivers are up to date in case that is actually the problem, and for fun run windows update.
BTW my spell check seems to understand "fader" including when I use the spell check button.