Global search results don't honour multilang filter

Yeah, it seems that the titles of results of global search display all languages wrapped with <span lang="XX" class="multilang">your_content_here</span>.

I've been able to reproduce this on Mount Orange:

1. Create a course with a multilanguage title, like so:

   <span lang="EN" class="multilang">TITLE ENGLISH</span><span lang="RU" class="multilang">TITLE RUSSIAN</span>

1. Wait a while for the course to get indexed by global search
2. Set language to Russian from the language menu
3. Perform a global search for 'TITLE'

Result: TITLE ENGLISHTITLE RUSSIAN is returned as the title of of the page, in both languages but strips the <span>

Expected: TITLE RUSSIAN, i.e only print the Russian <span>

Hopefully I'm not losing my mind and someone else can confirm this behavior.