PSA: Watch out - if you keep feeding a Razz berry to a Mon until it gets "tired" of it, the selection will automatically switch to Golden Razz

I learned this the hard way. I was just mashing the screen, feeding Razz berries to a Gyarados and suddenly I noticed I was throwing a Golden Razz berry. When I tried to select the Razz berry again (I still had 80 more), I got a message saying the Pokémon is tired of that berry.

Not sure what happens when you start with a different berry than Razz.