Ignore Article "A" "The" Etc.

KODI ignores the article ‘the’ but does not appear to ignore the article ‘A’.

I have set KODI to ignore articles.

Is there something I am doing wrong or some way to fix this other than adding an NFO with a sorttitle to all the movies that start with the article ‘A’ (and I would presume any article other than ‘the’)?