BUG #13478: Simple dictionary does not check for stopwords

The following bug has been logged on the website:

Bug reference: 13478
Logged by: John Grant
Email address: john(dot)grant(at)suncast(dot)co(dot)uk
PostgreSQL version: 9.4.4
Operating system: Ubuntu & Windows
Description:

COMMENT ON TEXT SEARCH DICTIONARY simple IS 'simple dictionary: just lower
case and check for stopword';

The following command should return {}:

SELECT ts_lexize('simple','The');

Instead it returns {the}