My coffee-maker doesn't like to make decaffeinated coffee. However, it's perfectly happy with the full-caf variety.
It's a barista style machine (or however you call them, not a capsule-type machine anyway). We use red Lavazza or decaf Lavazza depending who's drinking it. It makes very nice coffee with a lovely crema; however, it you put decaf coffee in it drips it slowly and painfully and eventually stops. Every single time.
Why? I don't believe coffee-makers are sentient beings, but this kind of thing makes me wonder...