"Nuance" used to mean "a subtle difference." Since you're spraying perfume on crap by using the term "nuances" for problems that can drive you to bang your head on the wall, let me suggest a new term: puances. Or pooances, if you like. Every modern control system has had them and it always seems like the manufacturers could have avoided them.
A good answer is easier with a clear question giving the make and model of everything. "The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw
