Cautionary Accidentals are turned on (checked in Engraving Rules) for most default house styles. I'd prefer to turn these on myself, if I want them turned on. This is extremely confusing when teaching the program, in particular, because accidentals start showing up when you don't actually input them yourself. (Confusing when teaching note entry!) Personally, I'd prefer for that setting to default "off," and have it available to turn on if someone wants to turn it on. I prefer to work without it, as I want control over whether I insert a cautionary or not.
Idea No. 117