I have three filter hoppers on potato that won't let me change the item they're filtering. One is set to none, and two are set to wheat. I also can't change if they're whitelisting or blacklisting. Doing the normal clicky stuff for setting the item or changing the white/blacklisting has no effect on any of them. I'm not sure if I'm being dense (not ruling it out) or if I'm having a technical problem. Any help is appreciated.