I've got a bug when rvAddict generates too much suggestions (more than 100 with almost endless list) and it seems not an Addict bug (I'm using latest version 4.2).
Posted same question in Addict forum and they can't reproduce this error but it can be easily reproduced in your rvAddict simple demo. See image here
Yes I know I can limit them with MaxSuggestions but it's not good - there is a chance to lose real suggestions.
Anyway disabling PhoneticSuggestions did the trick.