Regex match autosuggest suddenly suggesting all source words

Hi,

 

I just upgraded from Studio 2017 to Studio 2019 and reinstalled Regex match autosuggest. I haven't changed any settings, but now it is suggesting every uppercase and lowercase word in the source. I am using [A-Z][a-z]+ for proper nouns, but have no such pattern defined for lowercase words.

It is also no longer suggesting some things that it used to, such as years 20[0-9][0-9].

 

Thanks for any help,

Maria