I have a fresh install of DokuWiki (following these instructions more or less https://www.dokuwiki.org/install:freebsd) on FreeBSD 13.0-RELEASE and using Nginx as my web server.
I don't have any plugins installed, and have not gotten any further than creating my first page.
My DokuWiki doesn't display any icons anywhere in the site, but I first noticed it in the editor toolbar when editing pages. There are no icons for any of the editor functions.
The only other changes I have made are to the default data directory, which is in different location. The data directory should have the correct permissions and all of the paths have been updated.
I have also tried clearing the cache of both DokuWiki and my browser based on these instructions https://www.dokuwiki.org/devel:caching#purging_the_cache but it didn't do anything.