Unable to edit local rules

I can’t create a new rule or edit existing ones. The New Rule button is greyed out, as is the edit button. This is true for local rules, which confuses me, as I have a number of rules I created previously. I can duplicate a rule, but not edit the one duplicated, nor delete it. Is there some limitation I am not aware of?

Did you ever solve this problem? I’m having the same issue.

I did, and don’t remember exactly, but I want to say it was something really dumb, like I wasn’t logged in properly, so the permissions were invalid.