Maybe it’s not that widespread? Are you on windows or Mac?
Yeah, my vst3 are all in the default “Common Files/VST3” folder and they are all 64bit too.
I’ve also double checked to make sure that path shows up in plugin manager too!
VST2s shows up fine. Just all 3rd party VST3s.
I just found this thread with the same issue today btw.
Super weird 