Same deal. I checked the Plugin Manager and both Blackhole and Blackhole (No MIDI) are properly validated. It looks like regular Blackhole only shows up now as a MIDI Controlled Effect in an instrument slot.
Maybe that was always supposed to be how it worked, but I’m pretty sure most of us saw “Blackhole” and just selected “Blackhole” whenever we needed that particular reverb.
Certainly gonna screw up a whole buncha my sessions if I have to convert everything over to the “No MIDI” version and lose all my custom settings.