Did you try it? it claims to install an AUv3 plug-in but I could not see it appear inside Isadora.
I try it yet with the same result but I think it is not an Isadora problem. It doesn't appear in any audio software I use.
You are right with Meldaproduction and it is the same problem by each update. I have also a problem with the aesthetics of the interface but it is common by audio software.