maybe bug in 1.1.5

My Permalink structure is /%postname%/

I found my post page didn’t create the cache, it shows:

!-- permalink_structure ends with slash (/) but REQUEST_URI does not end with slash (/) -->

I found my another website is OK, then I replaced wp fastest cache from 1.1.5 to 1.1.4, it works.

<!-- WP Fastest Cache file was created in 0.49250102043152 seconds, on 12-05-23 7:38:45 -->